Lens of Truth did a comparison of both games, here are their finding.

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			Head2Head – Call of Duty: Modern Warfare 2 Analysis Length: 00:09:31 We go Head2Head with the much anticipated Call of Duty: Modern Warfare 2 for the PlayStation 3 and Xbox 360.

Once again, thanks to the fine folks at Play N Trade (Lake Mary), the Lens of Truth got its hands on one of the most anticipated games this year. Call of Duty: Modern Warfare 2. If you are in the market for this game, sit back and get your trigger finger ready because this is one war you’re not going to want to miss! Hooraah!

But before we begin, let us reiterate the purpose of our comparisons. Our comparisons are tailored to the multi-console owner, the ones who want to know what is different between each version. Differences such as load times and small graphic variations might not mean much to some, but to others it may. It is our job to report the differences, no matter how small, present the data and determine a victor. No matter what the verdict is on a game, we will have some gamers who disagree with us. That is fine by us; at least we provided the facts and ultimately it is up to the consumer to decide which version to purchase.

Graphics: Technically speaking, both games look very close in the graphics department. Like the previous CoD 4 and CoD: WaW, both versions of CoD: MW2 run at sub 720p resolution but support 2x anti-aliasing to compensate. While the graphics are great, Infinity Ward never really pushed the visual envelope. Some textures looked great, while others were less than stellar. But it was nice to see that they were able to maintain the texture quality across both platforms, which you’ll notice in the rollovers. However, like most of our Head2Heads, there were some minor differences between ports and they are worth mentioning. The shadow quality on both versions of CoD: MW2 are pretty jaggy, but the Xbox 360 version softens the stair stepping effect by essentially anti-aliasing the shadow (higher samples). Another difference we noticed, off the bat, was that the PlayStation 3 version was missing an overbright (glare/bloom) effect throughout. We mostly noticed this effect on metal objects like the guns the characters were holding or areas that had intense specular or bright surfaces. Now before you yell “victory!” you might want to let us explain. Indeed, the effect is cool, but in all actuality you’ll only notice it when there isn’t a battle going on. For instance: you’re in the middle of a fire fight, bullets flying everywhere, things blowing up all around, do you think the bloom effect is going to be noticeable? Probably not. On the other hand, in the snow levels the effect can be seen almost everywhere and helps emphasize the whiteout conditions. Now these might not be significant differences, but none the less they are technical differences. We at the Lens of Truth have to acknowledge these variations no matter how small or insignificant they may seem; we feel that gamers deserve to know. Moving on.

Performance: Both versions of CoD: MW2 perform well, but neither version is perfect. As you will see in our analysis video, when things get hectic on the screen the frame rate starts to take a dive south. The frame rate range in some segments of the game are drastically different, starting at 60fps and dropping down to around the 30fps mark. The good thing is that the game very rarely drops below 30fps so you don’t feel the plummet as much. However, the PlayStation 3 version consistently had the lower frame rate when the screen was packed with action. It also appears that both versions of the game suffer performance loss when there is a large amount of alpha smoke on the screen. Just like the previous CoD entries this generation, Infinity Ward decided to v-lock the game. Good choice, as it is refreshing to be able to fire a weapon and not have the screen split into two due to frame tearing. Overall, we were very impressed with the performance Infinity Ward was able to squeeze out of their engine. Listed below are the averages for both versions of CoD: MW2:

Loading: CoD: MW2 manages to mask the load times during each of the mission briefings and story narrations. So, if you are simply playing through the game the load times will not affect the gameplay experience. But, if you decide to replay a mission and want to skip the narrations, the Xbox 360 version has the quicker load times. On average, the PlayStation 3 takes 27 seconds to load while the Xbox 360 takes only 19 seconds. Also note that the PlayStation 3 version does not have a mandatory install.

Load Time 1: PlayStation 3 – 14 sec / Xbox 360 – 14 sec
Load Time 2: PlayStation 3 – 40 sec / Xbox 360 – 25 sec
Load Time 3: PlayStation 3 – 30 sec / Xbox 360 – 20 sec
Load Time 4: PlayStation 3 – 26 sec / Xbox 360 – 18 sec

Click Here to see the Rollover Comparisons.

Conclusion: Regardless of which version of CoD: MW2 you decide to buy, you will not be disappointed. Infinity Ward has done a great job of matching the quality of the game between the platforms. But like every Head2Head we need to judge the versions against one another. And even though the differences are minor, the Xbox 360 version is the definitive version to purchase. Small additions like the overbright (bloom/glare) system just helps make the visuals pop and not to mention the softer shadows and better overall fps. While the load times are masked, if you like to replay levels the added speed is welcome. So technically speaking the Xbox 360 wins, but seriously, it‘s a great game and it really doesn’t matter which system you purchase it for. For most the real decision comes down to what version your friends are getting. Oscar Mike!

	G R A P H I C S
	Although the differences are minor, the Xbox 360 version takes the win with overbright (glare/bloom) and softer dynamic shadows. We were also glad to see equal texture resolutions in both versions.
	P E R F O R M A N C E
	While neither version of Call of Duty: Modern Warfare 2 performed perfectly, the Xbox 360 had the higher fps when the action hits. But best of all, both versions were free of the dreaded frame tearing.
	L O A D I N G
	Though load times are masked in the game by narrations, people that replay missions will appreciate the faster load times on the Xbox 360.
	O U T C O M E
	The win was marginal with slightly better visuals, quicker loading times and a higher average fps on the Xbox 360. As stated before, you will not be disappointed with either version of Call of Duty: Modern Warfare 2.

It was already posted.

It was?

Was it titled Comparison, because I did a search and didn't see it?

Yes CGI-Quality posted it.

I'll try to find it.

http://www.vgchartz.com/forum/thread.php?id=91831

When will they start comparing online diferences, that's where the 360 really distinguishes itself.