I'll give you guys a little insight and background on the Desperado...
For years we had thought (as the original poster said) about a super weak cover with a very strong core... but when it came to developing the Desperado we soon discovered that the the old addage about cover being 80% of the reaction wasnt quite accurate... even with a very weak cover, a strong core will overpower the roll.
So, this lead to us developing the new type of urethane cover that is on the Desperado... we had to try a lot of different chemical makups before we arrived at the reaction we wanted.
The desperado is aimed at a totally different lane condition than the other urethanes mentioned, and we have stated this from the start. The Desperado was not developed to "skid on dry lanes", or else we would have put a low differential, high RG core in the ball. We developed the Desperado to be the ultimate ball on shorter tournament patterns. on these patterns, the Desperado out performs every other ball we tested.
Additionally, with a little polish, the Desperado makes easy work of lighter oil patterns, and evens out even the most under/over of house shots to give you the ultimate mix of control and power.
if you are looking for a ball with a POWERFUL core, tame controllable coverstock, and awesome carry at the pins, you really cant beat the Desperado... if you are looking for a ball to go straight on dry lanes... get a polyester
Ryan