It seems a bit speculative at this point to say that Brock would not have been able to make it out of the round.
When he looked like he was K.O.'d after hitting the canvas, he did rise to his feet albeit on unsteady legs with less
than a minute left in the round.
Wladimir has always been a very tentative finisher and I think that Brock may have made it through the round.
But that's EXTREMELY speculative at this point.
Hats off to a guy with a great chin and good boxing skills, and hats off to Klitschko for getting the job done and not crumbling
under the pressure like he used to.