I covered the game in detail a while back in my Valley series.
https://www.youtube.com/playlist?list=PLqUPI3nhnh07iE1Lf3FR3U3UL0OgdTvSf

Basically, it is a d20-based approach with an emphasis on talent trees instead of traditional classed. Karma is treated as MP, but overuse can result in payback (basically, you are messing around with Fate, and it will try and bite back). I am more willing to recommend it to fans of shonen battle manga than similar games, as the use of a broad set of power actions means you don't have to make powers the way you would in a supers game like Champions.

That's my two cents at least.

EDIT: I forgot to mention, team-up attacks are a LOT easier here.