Based on the results of past attacks, he has few (if any) guards. When I've attacked him with squirrels, I get 1 or 0 casualties. Additionally, he's not in a clan, so he can't have allies helping.
Well gaurds are limited to how much land they have... (so alot of land=sux for you)
Hawk attacks would do little good too, but easily remedied if anyone would build up hawks and demolish huts some to get a good ratio... Then just hawk battle 'im, or yeah murder etc...