GT champ, your logic is flawwed, you obviously know close to nothing about either games.
GT4 obviously has more cars, but the customisation (where bad mods slow cars down, engine changin/ tuning), the online play, the damage, more cars on track, the AI, the sound, the more in depth sim elements (tyres heating up etc) and ofc the cars (f40s etc) interest me. Which is better, dunno, if Forza turns out to be crap, meh, I'll just play Gt4, but on the other hand, if it's ace (and it's certainly looks VERY good), WEEEE I'll play both.
I don't think it was meant to be funny. You moan about this thread going on, then make the type of comment that will just drag it on