Some players play better in a certain system and others don't. I was quite critical of Muldoon a few months back, as he went several games with zero goal attempts, and unable to hold the ball up, as an out and out front man(all in all very ineffective). Since then I have to accept that none of our strikers have really been putting the ball in the net on a regular basis. It's not that they are fluffing chances, they just don't happen very often. I do rate Angol, probably the best we've had this season, for his hold up play, shows the sort of skills you need.
I think Muldoon could find another club mid-table National League, with a different system and do well.