We've got several SMN capes in Qufim, definately from Nightmare Weapons, however the source of this Snoll dropping SMN cape isn't appearing (it was likely a mistake on my end); I think we can pretty well rule that out as an error/mistake/typo/whatever. But rest assured SMN cape is definately in Qufim.
The Gaylas dropping THF is also correct; it's from a run I witnessed myself; I can confirm that and it was just a week ago for us.
Ruling out the SMN+Snoll just leaves Viq's post about cleric's belt from a roc.
As for BG and CoP complaints, it's because you guys have such tremendous luck in other expansions instead of just average luck in both. '-'