Originally posted by DeadpoolXXXHard to say, because we don't know exactly how much Saitama was holding back against Boros.
[B]SAITAMA RUNS A GAUNTLET!!!!!first round- vs. raditz
second round- vs. tien, krillin, yamcha
third round- vs. piccolo
fourth round- vs. Nappa
fifth round- vs. vegeta
sixth round- vs. goku***all characters are from the saiyan arc***
how far does saitama get with full recovery in between?
if he clears, then he fights namek arc goku (when he first arrived on namek). [/B]
That being said, Boros was more of a planet razer in the manga -- that is to say, his most powerful attack would have destroyed the earth's surface:
https://ibb.co/PMYgWTy
Flip side, Vegeta's Galick Gun would have destroyed the earth entirely:
https://ibb.co/dpf3TZW
https://ibb.co/Zgk805K
Confirmed in the Daizenshuu: "Vegeta displays gigantic power capable of destroying the Earth."
So from that perspective, there's still a pretty large difference in energy output between Boros and Vegeta.