Vercure isn't really there to be a decent heal anyways. So even if they make Physick heal for the same on SMN, why would it be good even?

I don't think Vercure is a mistake though, people just randomly do the weak heals of it thinking they're helping when in fact they're not and just wasting time not dpsing. Vercure is neat to get a Dualcast proc on downtimes though, and its a fun mechanic to work around.