Is being a bear/gainer fetishized like BBW?

I am not gay, and I am really trying not trying to put people in a box or generalize the entire gay community on this issue, so please don't downvote slaughter me on this.But yeah I was wondering if the bbw phenomenon was an accurate parallel for this. I mean is it seen as this "fetish" that 2-3% of heterosexual males are into or is it more like a mainstream thing in the gay community?