Frankly, when you have blobs, even power weapons are too much sometimes. 4 PWs = another 10 bodies. The only things that give them pause are walkers, and barring FW drop pods,
you don't play Guard to let any walker get close, cadet!
<ahem>
Etcetera here can tell how 30 man strong blob just
ate Eldar assault unit, I believe, losing less than 1/3 of the men, and that after they outflanked next to them