That's cute, they definitely do NOT have the same audio quality of the other two, specially the 1000X-M2. Yes, they improved a lot and they had come a long way (specially in the noise cancellation), but IMO they are still not worthy.. I was considering them when I heard about the W2 chip, but I guess they will save it for the next upgrade ♂️♂️
While technically the W2 chip is the successor of the W1, just like all Apples SoC Series (ex. A7 > A6 > A5) its very unlikely there would be any tangible benefit incorporating it into headphones at this time.
The W2 chip used in the Apple Watch is reportedly 50% more efficiency with WiFi and Bluetooth. However that is compared to the previous Apple Watches that used off the shelf wireless controllers. And they don't say how much of that is from Wifi....99% of the 50% improvement?
Plus the W2 chip is the Apple Watch is modified specifically for that application. Apple does this with devices, like disabling a core in the AppleTV 3.
Appleinsight.com via their imaging report...
"The floor plan of the W2 chip has changed significantly from its predecessor, the W1: the RF transceiver is more complex, and the memory blocks have been removed in the W2."
Which is likely done for energy efficiency and something a device like headphones (without the S2 in the watch to piggy back off) can't afford.
Plus lets be realistic, how much can Apple improve bluetooth efficiency in just over a years time?
I doubt their will be significant gains or benefits using the W2 in the Studio3's that the W1's doesn't already provide.
My Studio3's that replaced my stolen QC35's get better battery life and SIGNIFICANTLY longer range. Can't really stress the range enough, they will cover my entire home from my iMac. The Sony gets around 30% better battery life in specific modes (NC on) however have a battery that is 210% bigger.
As far as sound quality goes, all three are "close enough" to make it a matter of opinion, at least for me. While they each likely have quality of sound that are
objectively better at specific points and frequencies they are all bluetooth noise cancelling headphones and they all sound like bluetooth noise cancelling headphones. That is like comparing the sound quality of the included headphones from Apple vs the included headphones from Samsung. One might sound better but not enough to ignore all other functionality for. For me when comparing headphones that are a close comparison to me it becomes very subjective exactly like a TV/Phone screen that is technically oversaturated may appeal more to a particular person vs a dull perfect calibration.
If you have an all Apple ecosystem like I do the Studio3's are clear winner in my opinion mostly just for the effortless syncing and switching between devices thanks to the W1 chip and iCloud account sync. I'm actually using my headphones much more often because of it. However if your focus is narrowed down to a specific function or feature (audio fidelity for example) an all-in-one type of headphone like these (Studio3, 1000X-M2, QC35's) may not be your best bet at all.
If someone is willing to compromise feature set for sound quality its not difficult to find headphones that have noticeably better audio quality. I have a friend that found a NEW set of PM-1's for around 650, apples to oranges I agree but the comparison of sound quality of the Studio3's vs QC35's are put in perspective.