This is very true. For NBA2k but also for real life. If you watch a NBA player shoot alone in a gym. Even a avg shooter like Derrick Rose, he'll stick Jumper after jumper with no defense guarding him. I watched Joakim Noah hit 17 ft line extended jumpers in a row while working out before the Bulls played the Cavs in the playoffs last year. First play of the game, Noah gets the ball in that exact same spot, and barely even touched the rim on his shot.
But here is a tip, I noticed that the jump shot feed back isn't always accurate. You have to pay attention to the misses. If it's really short, then you probably held the shot stick too long. If it is a bad brick, the kind that goes over the backboard after hitting the rim or is off target then you either released it too early or had the shot stick slightly too the right or left. If the shot constantly goes in without touching the rim at all (nothing but net) then that is the release point for that particular shooting form.
hope that helps. I prefer it to be this way because it adds to the experience of the game and brings a real life feel to the game. Because those are the results you'd get if you held the jumper too long or released to early.