Upon further review :roflblack:, while I was looking up parts at
www.can-am.brp.com my phone rang and it was my dealer so I asked him to look up the part # you listed. I had already determined that you were missing a 0 in the number, it should be 708000937, and I had found the numbers in the parts lists for stock seats and I couldn't find it there. He said that Comfort Seats, in the accessories catalogs start with a 219 part number so his first thought was that you don't have a comfort seat but then I went out in my garage and looked at my seat. My part number on a 2014 RTS Comfort Seat does start with 708, I also have a paper tag on the seat that says Comfort Gris (Comfort seat in Gray) but your doesn't have that.
So I would say that, yes you likely do have a Comfort Seat but measure it for sure.