That doesn't look very roid-ish. Looks more like he put on about 10lbs of muscle and then did a HUGE body fat cut. At his age it becomes more apparent.
I hate to be the bearer of bad news from the old man demographic to the young man demographic, but men lose the ability to build muscle mass starting in their mid to late 40s. By the early 50s, men cannot build any new muscle mass, and it becomes a struggle just to keep the existing muscle.
This is because of the rapid decline in testosterone production that starts in men's mid 40s.
For Simmons to put that much muscle mass on at his age, I can guarantee you he is taking testosterone and steroids.