Having never flown an F-15 myself, I can't comment on how realistically it handles like an F-15, but as a pilot, I can say that it handles more like an airplane than it used to. For one thing, it seems to depart controlled flight a lot more easily and realistically at high AoA. This is apparent as discussed above in that you have to be more mindful of your speed/AoA when landing, but more importantly, when in high AoA combat maneuvers. More than a few times I've yanked on the stick when a missile pops up on the RWR and been rewarded with an accelerated stall and it felt like I might have gone into a spin if I didn't relax pressure. Not sure if ED have said spins are possible, but either way, it's forced me to be a better pilot in the sim, which is probably a good thing.