Vegeta will always come the closest to Goku in strength among the protagonists, but will ultimately fall short to Goku and the main antagonist.
> During the U6 vs U7 tournament, Vegeta performed only third to Goku and Hit
> During the Universal tournament, he performed only third to Goku and Jiren
For a similar reason then, i believe he'd fall short to Goku and Moro this arc, and i believe the current settings imply as much. UI Goku seemed comparable if not stronger than Moro at full power, but lacking in time, which ended up fucking him over, with him not reaching the MUI state yet
And thus from this, i believe it's heavily hinted that at one point during the battle, Goku will reach the MUI state again post-Vegeta vs Moro battle, and thus for this reason then, i believe that Vegeta might end up surprising Moro with his new technique he learned in Yadrat, but still end up losing with Goku taking over
Now it would depend on what Moro would do in the meantime from the Vegeta battle, because as mentioned from what we've seen, UI Goku seemed already comparable if not stronger than him, and thus if Goku were to reach MUI state, he should stomp Moro, but Moro seemed to have reserved 73 for some reasons, and he still has ability to increase in strength by taking a meal, so either he'd use 73 to gain some power-boost, or he might suck more power to increase in strength, otherwise i don't see why the upcoming MUI Goku will not stomp him
The drafts of the upcoming chapters are already out, but i'd not talk about it for now