He does not seem to be at the moment.Ulloa is no miracle worker but scored every couple of games for us. He is a good focal point and the team know if they manage to put the balls in the right areas he will score at our level.
I do reckon that he would have scored a handful of goals for us this season, considerably more than any of our other strikers. Just a couple more wins would be four extra points which would put us rather comfortably mid table.