There was a server downtime last night so everyone was forced to log out, yet both your loadstone character profiles have you as a 60 paladin.
Edit: Shortly after this post loadstone updated! I retract the comment on your level.
Warrior has the 1200 heal *and* thrill of battle that they can pop off together for an immediate burst of healing before the Paladin gets a single clemency off. That is generally far more valuable and is not costing the Warrior GCDS on attacking and building their gauge. Warrior self heal is also affected by enhanced crit in attack stance and by extra health in defensive stance, and the former is enhanced by berserk. The idea of using the requisat extra damage/healing perk for clemency is strange at best, given you have to be at 80%+ to use it, have it off cd and not be in a position where you want to use it for your holy spirit combo. If an emergency is going then you been casting clemency and are now below the 80% mark to get the bonus. If you are able to be at the 80%+ mark at the exact time you identify you need to throw out an emergency heal cause of your slow healer, then you are living in a very strange and highly scripted world.
Marginal difference of ShO vs defiance, and largely negated by the fact that warriors have the single most available defensive CD in the game(inner beast), can be used on every single tank buster and multi hits. In the days of old you could say that inner beast was a warriors 'rampart' but that is no longer the case since they actually have rampart now with foresight being gone (for whatever it was worth).
Bluegarter paladins tested out oath gauge refreshing on large packs and, up to 5 or so sword oath still generated more oath than shield. Bulwark certainly changes that but we are talking about a 180 second CD with generally low uptime.
I'll reiterate; non healers can heal fine for short spurts, it just costs them and is not ideal. RDM can be a suitable off healer in a pinch, are you complaining about them? If a Paladin is spending mana casting clemency, that means they are not casting holy spirit and also depriving themselves of 20 oath gauge which is part of how they can self sustain their mana while in shield oath.
DRK and Warrior do not need to make a binary choice about their healing. If they need it, they use it, and for DRK is generally part of their new rotation. For a Paladin its a choice with opportunity costs, but the benefit is you can 'spam it', which enhances your survivability while further penalizing you with lost Holy Spirit, shellstrons and by extension, mp recovery.