it's a minor quibble but for me is important to note that ai is better in linmugen. You can patch that into chars but many do not know that about linmugen/winmugen. It makes for more fun game for fighting cpu but it is minor.
Eh, the AI is either something that would break Maximilian Dood's Boss Rage rating scale (except it would be every other match), or dumber than ants. Actually, MUGEN 1.0 added the ability for individual characters to have AI that scales with the difficulty slider in the options menu, now that I think about it!