It's not when used with Ooourah.
Ppsh+Ooourah can force Obers to retreat.
Look closer at replay with T34s.
2 cons with Ppsh were melting 2 Volks.
Great, cons that already beat volks now beat volks!
I'm sorry but when I have shock troops and whatnot available my enthusiasm for destroying my cons DPS outside of point blank range is rather low.
An upgrade that gives them SvT's or an LMG would help give them a roll instead of just making them shittier shock troops with a worse weapon profile.