Not really. If the Upper bracket finals winner has 0 advantage in grandfinal (e.g. 2 map vetos) they’ve pretty much gotten 0 advantages throughout the whole tournament.
It really just comes down to which team is better. I mean just look at grandfinal history in vct except for lock in, icelands 2021, and champs 2021. Envy had a map veto vs Gmb but still lost 3-0, Loud had two map vetos and got 3-0 by optic, Prx had two map vetos and still lost to fpx, Prx had 2 map vetos vs EG and still lost to EG.
Upper bracket finalists had only won two times vs lower bracket finalists
4:2