I agree with Devious on this one. Fury is 100% iLVL capped. If you have low iLvl gear you may as well go Arms. The buffs to the raid will essentially make you more of an asset. While the buff does help Feral cats, it's marginal when everyone is ToC geared. My feral druid pushes 8.5k without an arms warrior. On top of that MS isn't as big of a deal anymore because other classes have the ability now (hunters for example). With gearing you are more of an asset to your guild with Fury. CDs are free for sunders and improved shouts are awesome.
Execute for show, tank for dough.