I am going to say yes but it's subjective. It's just smoother and I think you can feel the increased contact patch.
I would happily ride a 29 or 27.5 as my main MTB but I wouldn't go back to 26 for general MTB unless I had to. I run Mullet now which is by far my preferred.
This is something I've wondered about. Is there really that much difference between 26" and 27.5"?
(I realise all associated parts are now much harder to find so it's basically a moot question)