15-22 (31 for critical)
+20%
+15%
+11% (from attribute over 12, specifically at 15)
So without any skills you should do 21.9 to 32.12 (45.26 for a critical) which is consistent with your observations based upon a ~60 armor level vs. Cold damage target every 1.33 seconds.
Now while this is a possible 34.03 DPS for NO energy/adrenaline (powerful in itself) the true power of a Warrior comes in with the Adrenaline skills (and to a lesser degree the energy skills) which can essentially double the DPS (no even including IAS.)
So in summary, you are doing just fine, as everyone else said, add skills to your list.
