He's not a 9 mate, I've seen every game of his at liverpool especially as a lone striker. He can't do it. He's too in-disciplined as he always wants to be involved in play. Barca's style of play is way too slow for him anyway. He's a player that excels in fast counter attacking football as he can isolate players then 1v1. An most of his goals came last season between septmeber to December, he had 19 goals in 10 goals with no pens. After January he went on a few goal droughts.
Suarez isn't touching the ball enough at Barca the stats back this, hence the drop off in his performances aswell.
If you guys wanted an efficient number 9 it should have been Aguero imo.