Best peeling class

[Palee]

Guys, I'm thinking for setups where we drive our own healer, to increase our chances of success we need a dps class that can peel enemies off of our healer.

Looking at different classes:

DK

• DG someone off of you
• Slow them, but if you're already slowed and dying and a rogue reapplying crippling poison every second it's impossible to escape

Ret

• hand of protection/sac (if the healer is not a pally already)
• split stun arena targets for 6 seconds from 20 yards (hard to use though because of low range)
• WoG if enough HP points
• Insta flash heal every 3 Judgements.

Warrior

• intervene
• charge stun
• fear.

Feral

• aoe root on round robin at least 10 seconds until it DRs.
• cyclone/heal when insta cast
• Nature's Swiftness heal/cyclone
• feral charge and stun

I think feral and rets look the strongest, but the main difference is that rets need to sacrifice a lot of DMG if they user WoG.
What do you guys think?