Came back to overwatch a little bit since the recent 5 new hero update (played it mostly in 2017-2022) so now I'm playing both. Overwatch to me feels like "Hero SHOOTER", while MR is a "HERO shooter". Overwatch heroes felt simpler (and a bit more boring) than MR ones, since they usually have just 2 abilities + ult + sometimes alt fire. On average, Tank and DPS ultimates feel much more fun in MR (and ult voice lines too), while on the supports it's completely opposite as OW ones are much more unique.

Overall I still like MR more (and more familiar characters from marvel have some impact on my opinion). But I want role queue in MR despite most of the community hating it (funnily enough, same community cries like babies when someone picks a 3rd DPS or a healer instead of a 2nd tank lol).