I agree gamepro does seem to explain their position better, but I still don't get the scoring system. I assume it's on a 5 point scale (a system I don't agree with anyways), but I don't see where they put their actual score, is the on I am supposed to be looking at the fun factor score?

I think it's a possibility.

I think Donwii makes an excellent point. Perhaps the reviewers didn't finish the game, I notice that niether Gamespot or gamepro mentioned the pointless fetch quest at the end of the game that Gametrailers and IGN critizied (had they it certaily would have justified their score better than the "Controls are too good" and "Not much like the other MP games".

I suppose that's possible.  The first part of the game has been said many times to be heavier on combat.  This is because the first hour of the game is more of a tutorial.  However, I really think it's more simply a difference of opinion.  Some people are disappointed with the way you backtrack now.  The system was streamlined so that you can now fly to different points on the planets, to shorten the amount of travel.  They didn't eliminate backtracking.  They just made it less travel time.  I think some people simply miss the actual trip time, but that was never really the important part to me.  The game itself is even larger than it's predecessors.  I, personally, prefer to have more new environments and less walking through old ones.

 Most of it seems they don't like the changes to the Metroid Prime formula, but there's a few bits I don't understand at all.

 "While the aiming takes awhile to get used to, once you find your desired level of sensitivity, you'll find that it almost matches the buttery-smooth movement of the GameCube games. Note that I said almost, as it doesn't quite live up to the past installments' standard." 

Again, what made Metroid Prime 1 and 2's aiming system so great? I beat both games twice, I found it simple and 
uninvovling when it came to shooting stuff most of the time, and nothing about that ever made me feel like it was 
buttery-smooth. O_o 

"It's far easier to get lost in Corruption than in past titles and while the settings and enemies are far more diverse, it comes at the expense of that amazing feeling you'd get in previous games knowing you'd explored every nook and cranny of an entire planet." 

Don't understand this part at all. They're upset that game has multiple planets, because they liked the the satisfaction of exploring an entire "single" planet? It really seems like a werid and specfic issue, I typically get an amazing feeling of exploring every nook and cranny in the "entire game". Doesn't really matter to me how they tally up the different sections to me, so long as I can revisit them.

Gamespot's review was a lot more helpful in my opinion. 

ROFL video game jesus LOL

well it is looking very good, and on one can predict how good it will do tell we know how the story goes

If it has a very good 1 player we could look at a very solid scoring game, very high actually, and from the looks of it we might just have that

The only thing i see bringing down the score is just like metroid, its a sequal and not completely new ~-~

Well I think both Gamespot and Gamepro seem a little confused. However, Gamepro was much more consistent, even if their complaints seem a little odd. I guess I found both reviews a little helpful, simply because they show the exact worst way you can view the changes in Prime 3.

hang on a second here...

From the GamePro review:

"When a substance called Phozon starts infecting neighboring planets, the hunters head off to investigate."

Phozon? PHOZON? who are these people?