about warrior aoe - its not limited to thunderclap - you also got Revenge( 1+ 2 additional targets) which is, pretty much, avalible all the time. and from talents there are the options between a 40sec (20sec if you hit 3+ targets) AOE CD, and 2 others with 60 sec CD. not to mention cleave and heroic leap. its a fair amount if aoe
Glyphed Demoshout also gives 3 free cleave/ heroic strike , which adds to quick aoe dps, and the fact that it is off GCD allows you to use revenge at the same time, to briefly bust aoe.
BTW - its not to say Druid tanks sucks, just to clearify that warriors got more AOE than Thunderclap