Vegeta should be stronger based on his own estimations, though how accurate they were is up to debate as Tapion brought up some pretty significant evidence to the contrary in a past thread. Not only did Gohan seem to acknowledge needing to get angry like against Cell to beat Dabura despite his senzu giving him at least the same level of Ki (if not more if assuming when Kibito said he'd restored almost all of Gohan's Ki was where the healing ended) as well as Dabura referring to him as "trash" in general is a lot to chalk up to just Dabura's superior stamina and skill, but Gohan noted he'd need to bring out all his power to stop what he sensed of Boo whereas Dabura scoffed at his initial power, and it's clear Dabura has at least some form of Ki sensing. Parts which would seem like Dabura taking things fully serious against Gohan also seem fairly questionable such as the fact he wasn't shocked at Gohan breaking his sword and we know Dabura isn't without his own agency in toying with opponents as he suggested through wanting to fight guys he believed Pui Pui could solo.
For what Super is worth, you also have a Future Dabura not suggested to have improved at all being able to take an attack from SS2 Trunks, who was shown handling the Z-Sword in base a lot better than Gohan or Goku initially could and his blade could clash against the Z-Sword prior to that. There's also the anime providing a scene of his Ki increasing against Boo. These are obviously secondary sources, but ones that don't directly contradict with what the manga implies.
That said, even if agreeing that Vegeta was still superior in power to Dabura, I wouldn't say it'd be by enough to make it an easy fight, especially not with Dabura's techniques.
