Actually if you go here:
http://subscribers.footballguys.com/...sortby=tottarg
You'd see that Witten had a 73.4% catch rate compared to Gates 76.9%.
That is also interesting because Gates averaged 15.6 yards per reception compared to Witten's 10.7. Deeper routes yet Gates caught a higher percentage of passes.
So technically, Gates had better hands last year.
In 2009, Witten had a higher catch rate with a smaller difference in yards per reception so Witten was probably more efficient in 2009.