Decided to remake my Heihachi video for All Stars once I had some free time to really put a little effort into it, this one should be higher quality and go a little more in depth to help people out a bit more. I was going to put in a section over his level 2 and 3 supers as well, such as when and how you might want to use them but I forgot.
To explain it here though, level 2 Kuma can be amazing or awful thanks to it being AI controlled. Typically you only want to use it on smaller maps with not a lot of places to run. Level 3's that are just instant kills are looked down on as being weak by a lot of the community (wrongly), but they can be good to use in certain situations. They typically cost less than the other level 3's, and if you're gaining AP at a higher rate than your opponents it can be worth it to build to level 3, particularly in 2v2, and then sit on it and run away saving it to use only to interrupt an enemy super, hopefully saving your teammate and making them waste meter. This is especially effective against players who rely on a gameplan of using level 2 supers, as you can interrupt them and make them waste a ton of AP.