The AI in Forza ruins it for me. I'm not a big online player, so the core game-play is important to me. Forza's AI is just horribly bad. True, GT's is somewhat easy, but at least it acts like it knows what the purpose of a race is. FM's AI seems as though it's there to hinder the player and nothing else... That is when it acknowledges there are other cars even on the track. It reacts poorly if/when it reacts at all. Just hire a driver and watch it "race". It brakes needlessly, it corners badly, it hits other cars as if they weren't present, it attempts to pass at improper times, it fails to make passing attempts at golden opportunities, etc, etc. It's as though it was programmed by people who have never even driven a car, let alone raced one. After a GT race, I feel as though I've run a race (even if it was an easy victory), where with FM, I feel like I've been in a destruction derby run by a bunch of untrained monkeys.
That's pretty funny cuz I feel exactly how u feel but about gt's AI. For one if u would put forza's AI on the hardest diff they won't slow down to much in corners and will take them at the same speed as u as long as y'all both have similar grip lvls. I know u aren't playing on the hardest AI cuz that's how forza slows the cars in the lesser diff setting by slowing the cars down in corners but still going flat out on the straights. All AI has difficulty steering clear of the player regardless of the game. In forza the AI does avoid u when it can and will take a multitude of diff lines thru a corner depending on where u are. For example if u come up the inside of an AI car under braking into a turn the AI won't try to take the inside line thru the turn it will take an outside line and give u the inside. Iv only been playing gt6 for a week so I can't comment to much about it other than I have been spun out and run off the track several times in corners. Also the AI in GT doesn't race flat out... The car in first place will sit and wait for u to pass and once u do he will then go flat out. That seem kinda unrealistic for a game that claims to be the most realistic racing simulator on a console. Both games have their faults. The AI in GT for sure goes to slow into corners I repeatedly have to dodge their accesivly braking asses coming into almost every turn. Next time u play forza put the AI on the hardest setting and turn off all the assists and turn on simulation steering u may be pleasantly surprised if keep an open mind and give it a chance.