Physically speaking I think they're very similar. One is not better than the other.
Bryant is about an inch taller, but they both run a 4.5 and are very strong. They both use their strength to beat the press, and shrug tackles. They both have knack for creating yards after the catch.
The only difference is the offense which Dez is in a much more WR friendly offense.
Dallas spreads it out and in turn that opens up TONS of space for him to run in. They also send Dez on a lot of deep routes. That's just the scheme. X and Z strike deep which draws the safeties deep and open up the intermediate zones for the slot/TE/RB.
The Niners run Crab underneath a lot, and he has to get physical to pick up extra yards. They use a lot of designed plays for Crab
At Dallas Romo is reading the presnap coverages and taking what he gets. Sometimes it's Dez but regardless they pass it way more than we do so naturally he gets more targets.
Ideally they want to force the safeties to keep an eye on the run and the intermediate routes which leaves Dez in single coverage. Romo will exploit all day single coverage on Dez every
[ Edited by eonblue on Nov 3, 2013 at 11:17 AM ]