I Don't know? Looking at those pics it looks like his quads have a deeper separation, his pecs look tighter with deeper ridges and his arms have deeper ridges between muscle groups (up and down the arm). it looks like same mass with better conditioning.
To me Jay presents better in the lighter color than last years darker tan also.
The lighter color definitely looks better on Jay. Last year Jay was just a tad soft in the middle, especially from the back (I was in the 3rd row) I and most of the people around us last year had Jay winning last year too. He just dwarfs Dex in person and clearly dominated all bodyparts save for the slight visible water especially in the mid back.
This is bodybuilding not body cutting, and Dex is just so much smaller than Jay its not even close. You need to see them side by side, but Jay just blows him away. They said Dex had better abbs and a tighter low-mid back last year so he won... But Jay totally smoked Dex on every other bodypart. Go figue
At his level he only needed minor improvements. I agree his color and conditioning were better this year, but the biggest difference was that he had that conditioning at prejudging and carried it through to saturday. Last year he was off on friday and even with big improvements at the finals he was to far down. Just look at the scorecards this year and see how much it effected Heath. THe pictues shown above from 2008 are from the finals. If he had that conditioning last year at prejudging he probably would have won.