Anybody at that level has good boxing skills. Crude and Slow compared to the very quickest, but the man sets up his shots well and has solid fundamentals. Pressure fighters are vastly underrated nowadays.
He has good timing and he sets his shots up well, but his footwork is pretty bad. It's awkward and SOMETIMES effective, but it is very flawed. A mover that could stay disciplined and box for 12 rounds would give him big trouble; granted they had good defensive abilities.