Nope, it looks like it was an intentional design choice. OK, fender headstocks with 3/2 don't like quite the same as the shorter ones, like the G&L 5s, it sort of accents how odd fender headstocks are, but the 4+1 really looks like they only realised at the last moment they had nowhere for the 1.
I too prefer the ibby 5 headstock (and I prefer the ibby 5 to 4, even though my first was a 4). The Fender headstock looks wrong as a 4+1, regardless of whether you are used to it. At least 3+2 looks like an attempt at balance.
I have a B2V, and before that (and for a while at the same time) had a B2. I would say the B2 was nicer to play than the B2V, I just wanted a 5 because I play 5s, but its B string isn't great and with the bigger neck I am not sure it is as good - I sold the B2, because there was no point having 2, and I don't really mind as it is only a backup, I hardly ever play it, but if I did, I think I might miss the B2.
So i suspect from you description, the B2V neck is similar to the XT25.