This is true, yes. In many ways you could say Fetterman is worse in his betrayal to his constituency. But as far as anyone can argue, it took brain damage from a stroke to facilitate.

Oz being the victor would have been a direct blow to the organization network that got Fetterman in office, which was largely policy driven. (Fetterman ran on the 2020 DNC platform, which meant holding the DNC to their promises at the time.) Fetterman is loathed for his policy betrayal. There is no real cult of personality around him where he can Do No Wrong.

He is better mostly because him losing to Oz would have meant policy didn't matter. And it does, which is particularly relevant for assessing Platner.

When you run candidates where they personally matter, and not their policies, you wind up in worse situations.