The game is ok... but it has some glaring problems from a gameplay standpoint.

Button-mashing strikes when you are close in is way too effective on a normal joe due to the slow response for them to block.

Too much difference in speed between top tier characters and normal joe characters

Very hard to punish a striker for whiffing hits (due to the slow response) with a non-striker or normal joe.

Almost impossible to figure out why a certain move/escape isn't working doing to timing or fatigue.

As a fighting game, I would say its slightly below average. As an MMA 'simulator', I would give it high marks.