You should be fine with those sorts of numbers. From my experience with A1S and A2S, if one tank is going a more defensive route i.e. more vit gear than str gear, the other tank can go full STR to compensate (or the dps can git gud trololol). I play Warrior and my DRK friend is the OT. He goes full STR while I stick with the higher VIT and we do fine.