I'm both a 50 war and 50 sch (technically mrd and arc but whatever) and I can say that its harder to notice if youre hard to heal as a tank, but its damn easy to notice as a healer. Trust me i've had well geared warriors and paladins and a pld is ALWAYS twice as easy and allows for me to triage the party. A war currently requires 100% of one of the healers focus, because if things to rough things get "really" rough for you.