@J.D.E. Ayane is a "vastly" overrated character in terms of her tier placement and MU's. She's a great character but not that good.
She has most of the things u'd look for in a character. Great advanced mid p and k hold. Great i12 46T throw with its option for guaranteed damage although it that option pales comparison to most of the good i12 or even faster throws in the game because it doesn't give a damage boost on CT or HCT but the optional stun game for more damage from it is excellent. Still with all things considered there are still characters that benefit from that option much better on actual faster i7 throws like Hayate or even faster like Hayabusa etc. So while a great option its worse in speed and doesn't scale for the guaranteed option.
Her crushes are extremely overrated in context. Generally speaking if any character wants to crush all you have to do is simply use a crushing move. The only real advantage would be if there was a major gap in impact frames between those crushing choices.
Not to mention her 6P was nerfed from a base damage of 22 or something like that to the base 18 barring Sarah and Pai who have the weakest at 17. So Ayane working from +1 will not run through i12's anymore but in fact trade.
Her 2P is beyond and I mean beyond overrated. There is a landslide of characters faster or same speed that come equipped with +1's on there 2P's. Not to mention her 2P is +1 only from the literal definition of just about max tip range.
In neutral her mid's are on the slower side at i13. Her damage output is low in comparison to other higher same speed or faster characters barring her mid P 2in1 launcher from 1 hit stun to launch scenarios. Quite a few characters do that scenario better from actual multiple hitzone launchers and dish out more damage from all further thresholds in stun.
People get flabbergasted by the concept of turtling to much and think its a unique trait because Ayane's is easier in concept due to her spinning. That's not a positive. It is at the end of the day ultimately still "just turtling" which any character can do. Its just prettier with all the spinning and shit. Spacing/footsies is a trait of the actual player. Whether its done via wavedashing or even just a basic knowledge of space control it is the same.
Her okizeme isn't the worst but it also isn't the best and quite frankly there are a list of characters in this game that can actually strip wakeup kicks from you as an option entirely all the time everytime which she cannot.
Her frame traps are overrated as well and generally speaking ok at best. Her crush frames on her tools like 6P and 4P are overrated as well. The active window isn't that big to do so though her 4P definitely has more of that crush window stuff going on.
Great character. Overrated character in terms of both tiers and scoring. The only character I believe is a shit ton more overrated than anyone else is Sarah as the health modification works against all the things she fails at in comparison to other characters in DOA5U compared to vanilla.