You've got one fire extinguisher

...and five separate fires. The other day I landed myself in an AB with all dps classes except for two pallies.

Ihrayeep: Please, for the love of...whatever deity you worship...tell me one of you pallies can heal.
Pally1: Nope.

Quick inspect: sure enough, both ret. Seizing the opportunity to crack the inside joke against my guild's pally healer,

Ihrayeep: Ok so...I'll solo-heal this. Should be fine as long as noone gets hurt.
Pally2: I'll bubble the whole game.

We eventually won that game, though I was outhealed by a pair of horde priests (I believe the numbers went 260-240-200(me)k), and this I think is why: For heals especially, it's not about topping the charts in a BG (though I do that fairly routinely) so much as putting those heals in the right place. When you are called on to solo-heal a BG, particularly the three 15-man ones, positioning is important. You are responsible for EVERY SINGLE FIRE. AT THE SAME TIME. It sucks, high stress. Basically, if you are standing still you are losing the game. You have to be constantly moving, because *something* is always under attack, and if it's not where you're at then you need to move yourself somewhere else. You have to be everywhere at once. Frequently you have to make heartbreaking decisions about who to leave to die because there's more than one flare-up. Also this is the one instance where I would diverge from my usual dictum that it's ok to be a healer stranded guarding a node. Because you are *it* for your team, you can't do that. Better (in this case only!) to leave the node undefended. Seconds you spend not healing watching the node are seconds where people are dying from no healing backup. Remember that healers are a force-multiplier in battlegrounds!

Still, there is a plus-side: you get to take sole credit for winning. SOLE. CREDIT. Because if you won with only one healer, you deserve props. And I give you full permission to be an egotistical glory-hog for pulling that out against bad odds. But be a fun egotistical glory-hog, mmkay?