I also think that Liverpool are favourites in this match, but Fulham is still not the easiest opponent... It's the League Cup, and you can see that other teams from the EPL for some reason didn't make it to the semi-finals... Like Man City, Arsenal or even Spurs... So I think it's hard to predict the outcome of this battle...
Liverpool are the favorite for this fixture against Fulham considering their strength bas been much better than that of Fulham, in the history of the EFL, Liverpool has won several games and would definitely want to add this to their records and wouldn't let go of this chance especially with a team as Fulham who's not tough enough for them.
Getting to the semi-final must have been a good height for Fulham and over the years they have usually gotten to this point in the EFL which happens not to really be a big deal for them except that this time they are facing a bigger team but then to be mindful of willian who has got his third career goal in Fulham and will be looking to get a forth one in this game is very much important to the defense line of Liverpool hence the concede a goal courtesy of him, nevertheless Liverpool still remains most probable to win this match.