Surely, though, this is the fun of it all.
You support Rocky.
He looks like he is getting beaten up.
You feel sorry for him.
Then he EXPLODES!
Real Steel followed exactly the same formula. This has a shed load of CGI if modern film-making is your thing. That small robot could take one heck of a beating and just wouldn't stay down.
I believe Warrior also followed a similar formula.
The movie would be a bore if Rocky came out, all guns blazing and knocked his opponent out in 10 seconds. There wouldn't be any drama to it.
I love the Rocky movies.
A lot of it depends on just how much you like the Rocky character (down to Earth, in love with a simple woman, doesn't sleep around, is generally nice to all those around him...an overall nice guy).