What's the difference between regular Ultimate Match and Hero? The title sounds just like those other Chinese bootleg games. Also why would SNK allow their supposed competitor to use their license on a game? Interesting..
The difference between regular Ultimate Match and Hero:
No more loading times and slowdown.
The game balance is improved.
New 'skills' and some original moves are more 'efficient'.
Boss character will are fixed.
New stages.
CPU algorithm is fixed.
No BGM and SE bugs like original version
The reason it was licensed for the PGM 2 is that the hardware is very cheap as far as arcade units go. SNK wants to be very active in the arcade sector in as many areas as possible. The PGM 2 lets them do that without alot of overhead costs.