"How good is his command grab?"
A bit slow startup, but good. Really good range and his AA version has huge range and you can kara cancel for more. At least 50% (high health characters aside) comboing off it. Also, after you finish that combo (grab, dash jump d.c, dash, st.L, cr.M, cr.S, sj.MMH xx Inferno), mid screen it seems like you can actually AA grab reset on people who tech backwards. I've gotten it a few times in training mode, but the range and timing seems really specific. In the corner after air inferno you can try to jump up and air throw after they tech and get another combo, but again, only if they tech backwards.