Rein and Zarya, mercy and pretty much any support. is there a point in any other tank when zarya and rein do the best job out of all of them? Zarya has a cleanse, 200 effective health, and basically more damage then a solider when above 70 power, and can pop it on any ally in danger in an instant, on top of that having a game winning ult.
Rein has a massive shield and can soak up damage better then any other tank pratically, getting near him is a death trap unless you have enough damage to kill him before he swings twice, and another game winning ult
Mercy is a bitch and a half to ever hit, can REVIVE someone who died, and since her entire job is healing she does it better then any other healer on a single target.
What is the point of any other support or tank besides these ones? Cause yeah doomfist and ball CAN be annoying. but one nano and their instantly dead.
You are right except Rein, rein is pretty easy to counter.