I don't know if HEXV2 is better than Ananda. Ananda seems more technically proficient in terms of detail retrieval. HEXV2 doesn't have as much presence in the upper-mids which causes more laid-back, and easily tolerable, non-offending response. Pulling back the upper-mids like it does make the mids generally more noticible. I think these are the reason why HEXV2 had no sibilence or hardness detected. I think real hardness in treble is expressed in HE-500, HE-6, and the HEK series. I can't say Ananda is on those levels.
The HE-6 (4 screw in particular), and HEK v1 and v2 do indeed have some hard areas.
The HE-500 has spots of hardness but overall is darker and richer in the upper mids down to 30 Hz, has better bass attack, with better tone, albeit not as much output as the Ananda under 30 Hz. The upper mids of the 500 are also reduced compared to the Ananda. The 500 also has a spike in the 8-10kHz area which also has some notable ringing so its different than the Ananda, and arguably worse. But overall? I don't see it.
Let's pass over the Oratory 1990 "room adjustment" in the bass, which I have disagreed with in detail before. Let me just say one size does not fit all, and adding a form of distortion to line up headphones with some guys room is an interesting idea, but completely ridiculous as executed.
Where is the obvious 7-10kHz rise in the Ananda? All of the other 6-7 other sites I located seemed to find it outside of Rtings. It's audible, others have mentioned it.
In fact I just looked up Arya, HEK v2, Susvara, HE-6se, Shangri-La, HEX v2 on O_1990 (all six much higher list prices) - and the Ananda is
only one with a FLAT eq curve going from 4kHz-20kHz, and 3kHz-4kHz is at most 1 db off. Remarkable!
I've never seen a headphone with a flat EQ curve over that span of frequencies. Mistake at the factory!? The Ananda is actually the Shangri-La !!