This is all you'll ever really need to see of it, as this is the best part of the film, no joke.
That said I really enjoy this fight, Rocky schools his ass in what amounts to a really badass street fight. Personally you can't beat at the end when he uppercuts him into a bus with the township rebellion of people cheering on.
If only the rest of this film was as good as this old school beatdown :(
This is why so many experienced students of the ring caution against over-relying on the "momentarily turn into Dolph Lundgren and back again" offense.