Thank you. I only lacked the link since I didn't remember the names of these sets.
So I found all T2 PvP sets that are related on the bottom of this page:
https://turtledb.cthuly.com/site/spell/14477.html
Let's examine the facts.
T1 pieces have item level of 66.
T2 PvP pieces have item level of 76.
T2 of BWL pieces have item level of 76.
This is comparison of some pieces of Discipline Priest sets: T1 from MC vs T2 PvP.
As you can see, most of T2 PvP items have stronger PvE stats than T1 pieces and additional tons of Stamina on top of that. Note my observation is based on 1 spec so far and there are 26 more.
But what about BWL's T2 vs T2 PvP? Here generally BWL's T2 pieces are stronger for PvE but PvP set has tons of Stamina again. But apparently, there DO exist some pieces that are better in PvP set. For example legs for Disc Priest:
It's also worth mentioning that some PvP items DO have hit - contrary to what some people here claimed. "Some" is important word, Disc's PvP set doesn't have any hit but I think it's due to our talents that allow extra hit. I saw Hunter's boots that have some Agi and 1% hit.
My conclusion is the following.
If you think it's fair to allow these items to exist on day 1 of BWL, you are insane. On day 1 everyone has most of BiS gear on level of T1. Even in Vanilla these items weren't as good if we take into account DPS stats. And in Vanilla only small minority of people had access to this gear on BWL release - on Octo this isn't such small minority.
However, I don't think there is an urgent need to delay it up to ES release. I still think December would be better month for the release - after 4 weeks at least the power spike won't be as giantic as on day 1 access.
It seems I'm the only sane person in this discussion and you all want to turn me into idiot. If 100 people support one thesis, how many people are needed to prove the thesis wrong? 101? No. Just 1 person. So stop this bullshit because I start to believe I'm not discussing with honest people but rather some kind of lobbists who cry on the forum just to benefit for their own character.