Regarding the AS Roma v Fiorentina match, at least I only said that maybe AS Roma will fail to win, and that doesn't mean AS Roma will lose. Because ya, anyway, sofar this season atleast AS Roma has had better results for home matches. But ya, if for example you might be betting on Fiorentina, then maybe you could choose the double chance option. Or maybe, you can also choose the Asian handicap option by choosing Fiorentina +x.xx, and I think that will still give you good odds, considering that AS Roma is still the favorite team in this match.
I have a slightly different opinion if you say it is difficult for AS Roma to win or maybe you think that the chance of winning is very small but for me Roma's chance of winning is very big after seeing Roma's performance which is quite good and anyone will know a club coached by Jose Mourinho when it shows its best performance, the club will definitely be more stable and beating Fiorentina is a very big opportunity for me.
Betting on this match I will only choose to bet on Roma with fairly high odds and if you bet on the Asian handicap for Fiorentina it seems like a waste because there is only 0.75 it won't be enough to win your bet because I guess the score will end 3-1 if Fiorentina is added 0.75 will be wasted.