I don't want to get into the controversy over profiling, but I would like to give my opinion, because I find it an interesting conversation.
Taking advantage of the fact that I have just published the review of the NF Audio NA2, in its "Profile" section, I have commented that
"The NF Audio NA2 has a slight W profile, with good balance in all ranges. Although, you could say, they have a good accent in the sub-bass area."
For the description of the profile, apart from the sound, I usually lean on its frequency response:
I agree that, a V profile cannot be considered balanced, but there can be a tendency to balance if its curve is smooth, that is, if the mids are not recessed. I prefer to talk about slight V's, rather than balance or equilibrium. But, these are always recurring words that can appear in any comment, when describing something as subjective as sound.
Anyway, here I leave you my review about the NF Audio NA2, that I hope you like, beyond the definition about its profile
https://www.head-fi.org/showcase/nf-audio-na2.24196/reviews#item-review-23493