I just tried this out, one match for each version of the first stage. This is quite impressive. Especially since I'm not aware of any prior Super Bomberman 2 rom hacks, so this must have taken some skill to accomplish. Nice job!
I'm particularly impressed by the extra character/stage version options and the variable speed kicking. I note the former because those weren't even implemented until the third game. The latter isn't something that I remember having been available in the battle mode of any of the official games, and it seems like it could offer a rather interesting change of pace when playing against other people.
Once again, nice work.