pure dexterity is actually fine especially in pvp 65+
you get 48 dodge just from buffs and a maxed hellscream basically eliminates any other damage you may take
below 65 I would recommend using a talon or dagger if you are the only bear on your team
this advice if for unelixered pve
if you are using elixirs u can basically use strength intelligence if you really wanted and solo levels with ease still