PLD has a much lower skill cap (Until shield bashing is the difference between a wipe and not, at least), and they're also much easier to heal on average.

I'm positive an exceptional WAR can tank fine, and would only be considered poor when compared to an exceptional Paladin.

My personal advice based solely off my opinion? Keep with WAR if you like it and don't plan on doing CoB anytime soon. Roll a PLD if you do.