I'd say since the injury Whyte has made improvements every fight. I think Wilder vs Whyte makes a lot more sense for Wilder than Whyte right now and at some point whoever holds the WBC title will have to face Whyte and looking at the speed of his progress I'd be thinking lets get him in the ring next, not when he's got another two or three fights under his belt.
We can question what level Browne is at, but Whyte dealt him easy and missed with very little. I bet if he had gone up the gears and wasn't fighting for a mandatory spot, Browne would have had a serious problem as Whyte could have put a lot more on him. That jab> right hand> pause look for the upper cut could have easily been jab> right hand> left hook to the body half a step back> overhand right> uppercut> hooks!