Why people says AST is bad?

[RiisWolf]

A mediocre increase not worth the merit. It reduces our main heal's cast time by 0.10 sec, and our group heal by 0.13 sec. This in no way makes us a "fast healer", and serves only to attempt to slightly band-aid our already existing handicaps (weak healing) and hurt our already poor MP efficiency even further.

While yes, the increase is decent, it's not enough to put us into the category of "fast healer." That's all assuming you are actually using 1 of our 2 sects too (there's another one, even if it's weak right now). Other healers have speed increases of their own (Presence of Mind, Fey Wind) as well, along with stronger instant cast heals (Indomitability, Assize, Tetragrammaton, Benediction) so it's not like we're the only one, even if our bonus is passive.

Do you have ANY idea how effective Fey wind is now?

AST's Diurnal Sect increases attack speed by 5% while active.
Fey Wind increases attack speed by 3% for 30 seconds and has 1 minute CD. And keep in mind, you said how ineffective 5% is, so why are you spouting NEED favoring spell that is so nerfed it's doing no one a huge favor?
Presence of mind from WHMs, sure increases speed by 20%, but your not using it again for 2.5 minutes! Sooner if for whatever reason they get buffed by the spear card. That CD is best for killing things faster or speeding up with much need healing normally for emergencies. THe CD is so long, why is this even being compared to the other two???
And WHM's are always the best when it comes to raw healing (and power), but they sure can't support like ASTs do, not even as much as a SCH, whom are not capable of providing any significant Damage increase, resource reduction, CD reduction.