He used to come in shredded and full and his muscles just a certain pop to them. These past 3-4 years, he's come in full, but not shredded. He also looks way different in the face compared to how he used to look.
Here are some comparison pictures:
2009: Notice how different his face looks compared to now.

2010:



2011:


Now look at these pictures, notice how his neck is way bigger, his face is way different, he just doesn't look the same. Regardless of his physique, he just looks like a different person sort of. It's weird. Not sure if he is just aging badly or what.
2012/2013



2014/2015



It's like his muscle quality changed. It used to be smooth round, ripped full muscles, now it's looking haggard, beaten, less defined. And he just looks way different.