The Crit difference applies to Ascensions gains as well, so it's irrelevant.
Jab is 9,000 mana, I don't care that that's a bug, it's been that way for a month now and it's not changed on the PTR so it will stay that way. On top of that, there is no possible way your "average Chi" cost would be 20k, because there's a lot of healing associated with that. You're not just paying 20k mana for one Chi, otherwise you're just being ridiculously inefficient.
I acknowledged the fact that mana tea will not be used on cooldown, but neither will Chi Brew, and I said that as well.
Nothing you have said substantially changes that calculation showing that it's too close to even matter in a real raid situation. Saying that it "doesn't compete" is just being disingenuous or plain illogical. You even seem to disregard the point of this discussion, under some delusion that I'm trying to force them to be balanced. The design intent is irrelevant to this discussion, everything I have said and used is based on real in-raid practice and math surrounding how the abilities functions. There is no opinion in that, it's all hard facts.