Originally posted by Galan007makes sense, but again if vegeta has already surpassed jiren, then why is he still trying to reach jirens level?
No, they aren't close at all. Jiren-level power has been eclipsed by many orders of magnitude in the manga.For example, Goku confirmed that Moro-73 was the strongest opponent he'd ever faced up to that point:
https://ibb.co/bBjPb4J
...Which automatically puts Moro decisively above the likes of Broly and Jiren.That said, Goku was able to completely no-sell Moro's attacks, and defeat him with almost no effort:
...And that was several arcs ago. The Saiyans' powers have increased exponentially since then.As far as villains are concerned, the scaling would be something like:
Black Freeza > Gas > Granolah > Angel-Moro > Moro-73 > Broly ~ Cell Max > Jiren... With each '>' potentially representing a difference of several tiers.*Current Goku/Vegeta/Gohan would fall somewhere in the Gas/Granolah range. As such, any one of them could one-shot Jiren with a zero-diff backhand.
tl;dr
Vegeta still respects Jiren, for the same basic reason Goku still respects Roshi and King Kai. As mentioned, valuable lessons can still be learned from weaker opponents.