Thanks fo the answer. I don't look at HPS as it's not displayed on the Absorb and healing tab, I gauge comparing to the other healers. I managed to get last ex-aequo on DBS, PP & BQL 25HC and LK NM, other healers were nicely geared Hpal, Disco, Rdruid and Rsham. On the other bosses I was last with 30% less than the 4th. I found Serendipity really fun but it got too many bad remarks from my RL.
So I can answer a clear NO to my guild about them wanting me to go 2p T9.