Tanks overall need good healers or you will have more of a bad time then the dps. Yesterday i was winston and i had a Mercy as a healer with a Lucio. As the only Tank i was the only one trying to creat space and whenever the Mercy turned away from me to damage boost the widow i got deleted. I wasn’t even diving really i was just trying to create space and trying to make the enemy who are diving back off.
What i want to say with that is, that Tanks and Healers as well depend much more on the team than the dps and that can be really frustrating . A Winston or better Dive, where Winston is a big part of, needs coordination. That is often lacking and the first one to pay for it are the Tanks on the frontline. That is why you don’t see many Winston mains.