Totally agree. I always laugh when announcers call a running back who's 5'9" and 210 small. There's a difference between short, and small. And it's not all that complicated. 
A guy who's 5'7" or 5'8" and 210 is actually significantly THICKER than a guy who's 6'1" and 210.
 
As long as a guy's sturdy enough to take the pounding, outside of short legs impeding straight line top end speed, being shorter and harder to find behind a bunch of 6'5" 310 pound O linemen and in traffic in GENERAL, and having a lower center of gravity for cutting, is actually an ADVANTAGE.

His career wasn't what I'd hoped, but it was annoying when announcers would ALWAYS mention how small Quentin Griffin was. Even though Q and Glyn Milburn were BOTH 5'7", no one this side of Helen Keller would claim they had the same body type.
Even though 205-210 pounds is definitely lighter than average for today's NFL running backs, I sure as HELL don't wanna stand in between 207 pound Maurice Jones Drew, and the goal line.