OW Hero: Winston

Here's my take on this matchup, coming from 4 years of professional TF2 experience, maining engineer. Torb is slow and has an OK primary (fire rate is low, projectile has slight drift, but does a bunch of damage) He's comparable to the engineer.

To take down a turret, Winston works well. He can possibly disable a turret by himself by jumping to it and turning on his Shield Protector and then killing Torb before spamming the turret. As long as Torb is alone. If not, his teammates may kill the Shield faster than Winston can kill Torb and the Turret.

The team has a better chance of taking it down by having Mercy jump in with Winston or have long distance players spam the turret as soon as the Shield goes up.