Pretty much this. He was technically good but too one-paced and flat footed to make an impact on English football. Nevertheless, he scored a handful of important goals and certainly helped bring some of the best play out of Roofe. He was a real team player.
He had one or two very good moments, the deft header he did to lay the ball off for Roofe's goal at Bristol Rovers was top quality. He had a footballing brain but unfortunately his legs weren't quite quick enough and he was a tad too short.
It was a gamble that just didn't pay off, unfortunately. But it is these sort of players we should continue trying out, some will work (and be a great success) others won't and they can move on after 6 months.