Run AAE for 25 mins. Maybe not all games, but Asteroids for sure will go dark.
Analog control? Forget it.
Rotate a vertical game? Forget it.
There are a bunch of other little emulation issues (extra ship shows up in Asteroids after the first game, star field wrong in Tempest, missing sounds in Star Castle and Solar Quest, etc), but those are the big ones.
AAE was pretty awesome but like most non-MAME emulators, it was eventually abandoned. The source was released (or some version of it) but no one has taken it over and no one is likely to. Still looks better than MAME, but MAME plays better.