Silver Surfer's Blast vs Superman's punch
Now this isn't a direct fight where we see is which would beat the other directly.
This is an overall power gauge of the two.
Now we know Silver Surfer doesn't hit as hard as non-holding back Superman. (Yes even an amped Silver Surfer would still be weaker than Superman)
We also know that Superman can not create a blast as strong as non-holding back Silver Surfer. (Yes HV isn't as good as the Power Cosmic)
So the question becomes which one possess the most damage output.
Parameters
A) They are bloodlusted
B) They are putting everything they have into this particular attack.
C) And for circumstances sake we will ignore things like energy vs blunt resistance. These attacks will be considered the same attack for this scenario.
So in this which one possess the most damage output.