Don’t you think this is a bad comparison?
One is a Tank and one is a DPS and I don’t know if you noticed but Tanks tend to have stronger Kits because you know there’s only 1 of them on every team.
But Besides that Sojourn can build her charge all on her one she just needs to hit the enemy Team. Doom needs to get hit by the enemy to build charge, without getting hit by CC.
Which becomes harder and harder the more you clime in ranked.
Besides that Doom needs his punch for survival. Holding Empowered Punch for too long is not useful at all. That’s also why nobody is playing like that.