No, Path is just one aspect of the general idea of OT utility that DRK is lacking. WAR/WAR, WAR/PLD, PLD/War, and PLD/PLD are all more efficient tanking compositions than any involving a DRK. Both tanks have better mitigation, both tanks have better team utility, and one tank definitely does more damage, while the other one might be able to as well. What does DRK do?