Definitely.
Size matters a great deal in fights no doubt. We're the same height, I lift (ain't on that juice like he is), and I roll and spar 3 times a week in Muay Thai and BJJ.
I've seen a video of him throwing punches (no combos), so I don't doubt he can score a knockdown on some UFC Tank Abbott vs Don Frye shyt.
My cardio and fight IQ is probably better than his.