I'm going to revive this thread, as I've done some homework in researching these games. The reason the PCE and PCE-CD versions SUCK is a minor but glaring flaw and is as follows. When you press jump, you crouch DOWN for a full 18 vblank ticks (that's .3 seconds) before you take to the air. That's ridiculous! The arcade and Genesis versions don't have that lag at all. Also, the recovery time after you are hit in the PCE and PCE-CD versions seems to be either short or non-existent, so that if you get surrounded, enemies can juggle you back and forth endlessly until you die. Oh yea, and using Run for jumping would have been nice, at least for an option. These all really seem like minor things to fix. Would anybody here be willing to take a look at the ROM and ISO of these games and see how easy manipulating these values would be?