Vercure does in fact have raid saving capability. That on demand heal comes in handy when your healer dies or is having difficulty. Topping people off in Extremes to avoid death is very common for me on RDM. Just because many attacks line up for Summoner played efficiently doesn't change the fact that as soon as your rotation gets thrown off for any reason you are misaligned from putting your heals where they are needed. This doesn't happen to RDM as their tools are always on demand. Nothing you mentioned actually refutes my claims.