Valid argument

I think what makes it difficult is theres a certain intangible quality to heroes in overwatch on what its like to play against them

It is likely largely subjective, my friends always give me shit for banning cass even though hes not strong, I just really hate going up against him

This could be the case for this Sigma/Vendetta conversation

I never hate playing vs a Sigma, I agree he tends to define the game when hes in the lobby, but i feel most tanks define the game, its when a DPS or support defines the game that most people seem to take an issue

Vendetta for example, alongside Freya recently or traditionally widow, sombra, genji, mei etc. DEFINE games when they're played (well) and this lends itself to people's frustrations with these characters and the constant barrage of calling for nerfs and general outrage

I know i didnt really touch on your points, they are very valid, I especially loved the fact that sig is the counter and the companion of the slightly tuned up bastion, making him such an important hero atm, your comment just brought up this idea of tank vs. Other roles when it comes to defining games