Actually 17% really doesn't seem that high lol. Especially not enough to make you fail the dolls in Anti-Tower, as mentioned earlier.
As for your other point, according to SE your DPS is pointless anyway. Healer DPS isn't accounted for in anything, it is merely a convenience for time in dungeons and clearing raids without the 'optimum' item levels. I am a SCH who loves to DPS , but I don't mind having to meld accuracy to get there. On the other side of the spectrum a lot of healers don't want to DPS at all so at least they can try justifying your mindset and doing zero.