As others have pointed out we were much more effective with Sammon on. Aisi there are very good reasons for this.
What he's particularly good at is holding up the ball and laying it off. The ball often sticks to him and his distribution is good. He links us together.
He also helps us defend from the front by pressurising the opposition defence. He's relatively mobile and has good stamina for this job.
What he's not particularly good at is aimless hopeful/hopeless flick ons, which is what afaict he's often being criticised for. Seems to me he's being criticised for not doing things he's not meant to do.
One of the reasons he "doesn't jump" is he's often trying to control the ball, retain possession, and bring others into the game - instead of heading it on which tends to bring the opposition into the game.
I wonder if he's being hounded out of the club, I think this would be a shame as I don't think we'll find player at our level better at what he does.
I'd be interested to see stats on how we do (eg goals scored and/or conceded) when he is on the pitch.
Bergen Blade produced something similar for McEveley. I reckon he'd be one of our better performers. I had a look but couldn't find the right site.