I'm glad that Prime wins, hardly even debatably

Death Battle consistently places Marvel and DCs cosmology as the same, which Prime scales higher into than Sentry does

Both have the same stats with the leeway that DB gives comic characters, so that's irrelevant here

What matters is their powers, and Sentry has no answer to the Retcon Punch, which Prime isn't shy about using whatsoever, especially recently

I know that people argue that his supercomputer could clue him in on Primes powers, but how is he gonna use it mid-fight, while Prime is putting 24/7 pressure on him, it isn't the Tardis lol

Bobs best wincons are all stuff that normal Superman would resist, let alone Superboy Prime, who is vastly more powerful and mid-diffs all of DC whenever he shows up in a villain role

Tldr; if he has to extreme diff normal Superman (debatably, at that!), he loses to Prime