LS are powerful but far from OP: if you’re within 6“ you can’t shoot. With terrain, and fast troops you can lower their efficiency. Hurricanes are way more dangerous IMHO...
Also, SCE tend to have a low model count, so it can be tricky for objective games.
And in the end, it’s fairly normal that a bunch of ragtag wannabe maurauders struggle against Sigmar’s finest 😁