5B is her longest range move, but the problem is if you hit it from max distance, it wont connect. You could connect if you counter hit and do a 6CC or you can keep pressure by using 5b, charge canceling and dash in for more pressure. Her SRK is pretty much known to be the worst one in the game... her D version is the only one with full invincibility and the B version has invincibility BEFORE the active frames.
I don't know why you would like to compare those specific players, but she's about even with Jin, bad against Litchi and Ragna. Her 2C is REALLY good as an anti air because it has upper body invincibility. You would want to use it as 2C, dash, 5B, 2CC to air combo on counter hit. 2CC by itself isn't too good. Her BnB works on everyone... Her only specific combo is the 3C, jC combo. Her mugen combo is still in works, I believe...
Dead angle is the counter move that you do for 50% heat. While blocking, press 6A+B and it should do a counter move.
I feel like these questions could have easily been answered if you checked out her combo and beginner thread... Check those out:
http://www.dustloop.com/forums/showthread.php?t=7854
http://www.dustloop.com/forums/showthread.php?t=7873