How would Tulowitzki winning be a joke? He beats Rollins in every defensive category.
http://www.baseball-reference.com/compare.cgi?top=/t/tulowtr01.shtml
(you have to search Rollins in the bottom page).
PO---A-----E---DP----FP---lgFP---RFg---lgRFg---RF9---lgRF9---Inn
227--479---11--110--.985--.975--4.36---4.00---4.41---4.44----1441. (Rollins)
262--
561--11--
114--
.987--.975--
5.31--4.00---
5.39---4.44----1375.0 (Tulowitzki)
Also worth noting is that all 11 of Rollins errors are fielding errors. 7 of Tulowitzki's errors are thorwing errors.