Bull cleaver for melee. (so 1/5 of weapon series, if you consider Mk too, hummies don’t have much choice too.)
Ripper gun, Heavy stubber, and Rumbler. (so most of his ranged weapon)
Use Rumbler, not melee in that circumstance.
Actually, you can be stronger to Ogryns than other classes in melee, with perk & feat. 4 shots can be possible without crit to Crasher on Damnation difficulty. If you have high stat Bull club, you don’t need perk at all with Bug fix (Ogyrn’s aura doesn’t work for him at least in test room.)
And staggering (Rumbler) can be important when thing’s going to bad, there’s Crushers, Ragers, Bulwarks with horde, kind of that circumstance, Even surge staff has its own limitation. But Rumbler can knock down hordes, and at least cancel elites attack (if grenade is close, they get knock down too)
I am not saying Ogryn doesn’t need buff or tweak at all. Most reason is less fun feats, ineffective damage bonus feats, and useless feats, weird damage reduction feat. And most of all inferiority of his weapon compared to the best weapons, Bull Cleaver and Rumbler. But I don’t think some kind of bump melee weapons damage 20% to all armor types isn’t needed.
There’s long post I wrote for Ogryn.
Addition for clear explanation:
I agreed that Ogryn definitely needs buff, and tweak, because of inefficiency of Melee weapon compared to Bull Cleaver, ranged weapon compared to Rumbler, and weird feat. But I don’t think it’s not super ineffective like that, and stagger is important when dung hit the fan.