^_^ The author's favorite character is Wolfram, though, so who knows. The manga looks like it's following the novels more closely. I get the chapters every month.
It's hard to say, though, because the novels don't really lean one way or another, even if the drama's do lean towards YuuRam.
I think most of the people who like Yuuri x Wolfram don't actually like the pairing, but like Wolfram, and know Wolfram loves Yuuri, so it's like they're YuuRam fans by default. I see SO many people bash Yuuri for no good reason, and they're supposedly YuuRam fans. This is usually where the Wolf!**** fanfiction comes in and makes me sad, because Wolfram's not a **** T_T He's so noble.