Wonderful. :)

Coming from a gamer that has played the full GT series (the second one on Dreamcast thanks to bleemcast ) and both Forza´s , the differences are not that great
I played to death the first 3 GT´s mostly the 3rd and i loved it allot , so i was eagerly awaiting the fourth game only to get disappointed, it was the same game nothing had changed i wasn't gona play GT 3 all over again only with some more cars and a different number on the cover

The big problems with the series are, AI is just stupid its the same since GT1 nothing has improved over the last decade on that front witch makes the racing really dull once u get to 1 place nothing will ever happen since the AI is not aggressive if u race on there racing line they will stay there all race behind you even if you stop in the middle of the track lol

The bouncing on walls and other cars is another thing that really deters from realism even more then the lack of damage damage if u want to win don't use your brakes just slam your way up to 1st place it works all the time ,Polyphony addressed this problem in the worst way possible in GT5P by not allowing contact between you and other cars with is the stupidest and most ridiculous way of addressing a major problem in the physics engine of the game because Turismo racing in real life is a bumper to bumper racing sport with allot of contact between cars
Another one is the engine sounds of the cars its complete crap i just cant imagine how they capture the sounds for the game compare it to something like GTR2 on the pc to see the difference hell even people on the GTR2 community get amazing sounds to mod the original game but polyphony always goes for the trapped wasp inside a bottle kind of sound that is so ridiculous things have improved on GT5P witch is a good sign for GT5 but still not good enough
So for me GT series is a very dull series to race because of the problems with AI and physics( has any one ever flipped a car in the GT series ? ) but a great one for time attack since it removes all the problems with the series and only leaves the great aspects of it like great attention to braking distances and the need to keep a good racing line if you wana be fast
To end my GT analysis i think it is a staled franchise on many aspects that finally polyphony are addressing on GT5 and its about time as well

As for forza series i haven't spent as much time on it as GT but to say thats its not comparable in terms of gameplay is stupid, my main problem with the series is that it tried to hard to be the Gran Turismo of the xbox and went for the same structure has GT witch annoys me more then anything else and that leaves in in the shadow
It tried to differentiate itself by adding damage and online play witch gave it a more human feel
The damage to the cars really makes a big difference on the races makes you drive with more precautions makes you wait for a good passing opportunity something that was not needed in GT because you could ram the other car at no cost and that adds allot to the immersion of the game makes you thing more like a racing driver and less like a gamer

my favorite is GT series the fact that i point out so many negative aspect is because i enjoy racing both on virtual and real life and if Gt wants so be THE REAL DRIVING SIMULATOR it needs to address these issues to make that claim more credible

quality wise there is a WORLD difference. the studio polyphony have 120 workers and they are crazy perfectionist.

forza actually was made by microsoft to be a GT copy knock it, it got released into this gen first so it had online before.

but GT5 it's getting all that, and known polyphony polish.

your just getting stupidly rediculous.  you boster about how you only car about how a car handles and comparing to actually real driving a race car around track 180 or whatever mph.  I dont' care what you think you have done and played.  GT or Forza playing with a controller is not gonna play like real.  Oh i have to barely tap this little stick slightly around corners ect.  Get over yourself and this game.  I mastered gt4 and was insane on it.  Throw me in a real race car and I will suck ass.

And who the hell compares a madden or when it actually has a competitor 2k to actually real football.  I've played football in high school and as long as it isn't a blitz type game, then it is realistic enough.  And they are not even close to realistic anyway.  If they were the scores wouldn't all be like 70-80 points, rushing 200+ every game, 80%+ passing.  This on all-madden.  Hell I prefer to play blitz with firends over these Sports Simulators.  

Now if you want to get into buying a wheel and all that junk then just get lost anyway cuase other racing sims blow gt out of the water.  Face it, the only reason GT is more popular or said to be better is because long time fans claim it is.  You are comparing a game that has had what GT 1, 2, 3p, 3, 4p, 4, 5p.  Don't know if had 1p, 2p or not.  versus a game that is only on its second.  Of course your gonna have people saying how amazing this game is compared to a new game.  Just like if the entire vikings football team was traded for entire packers team.  Both fans would believe their team is better before, and after the trade. Your blinded by your fanboyism.    

I haven't played forza or forza 2, but from comments it appears handles same, same features, extras.  Has less cars, but who the hell used all GT cars anyway.  I bet I only used 20 at most.  And forza has DAMAGE and more car tweaking/upgrading.  So if i was reading reviews even if gt5, gets a higher score than forza 3, I would buy forza 3.  I would attribute lower score to fanboyism reviewing

yea wiisports is leagues ahead of madden, or any other sports game out there.

mario kart is so much better than gran tourismo

or wait is a games quality not judged by its sales, but a personal opinion of a biased reviewer.  And yes biased, I don't care how amazing a company makes a game targeted at girls.  It will get a shitty review because of a very small demographic gamer is the reviewer all games.  

who cares if it is a knock off, or game made to be a copy to rack in cash.  Games like sims racing or something are sure cheap shovelware trying to snag a buck.  but just becuase somethinsg wasn't first or is copying doesn't mean it can' be better.

OR is uncharted worse than tomb raider, which both knock offs of indiana jones.

or other games, movies, books or whatever you want to put in there.  Originals aren't the best, and more likely than not they aren't, because the new game added soemthing new to try and distiguish itself while old game since being so popular and selling 10+ million just keeps old formula and just adds more of same old stufff.