I run 3on3 with a priest, me and either a rogue or a hunter. I've specced something as weird as
http://www.wowhead.com/?talent=MzjZVMGsfbMxkZVxIu0o in order to give the maximum i have to the team, however were i running with just about anything else i would go ht spec with oomkin-form just to spam cyclone from the safety of 400% ac.
You can provide all the statistics that you want, but that doesnt change the fact that your only viable skill in bearform is a 15 second cd with a 4 second duration that is very resistable. Bash is nice though.
Long story short; The only thing you bring to arenas is cyclone, base your build around that.