Bob was rank in testing vs. CB, even if you just maxed out on discard to make the extra cards most relevant. The only times he is good is when they have a bad clock and you are throwing discard at each other, so basically the mirror and GBx. Problem is you can just overpower WGB Junk naturally and the mirror you often randomly just die on turn 2-3 before Bob matters. That basically leaves BUG for it to be reasonable.