Height and weight have to be scaled against body type/lean or there's no context. Barry Sanders was under 5'8" but he weighed around 220 for most of his career, which was ideal for his type of build. You can compare that to a Marshall Faulk type that weighed in at 210 with a height of 5'11", put that against his body type/lean and playing style to give some perspective. Penny becoming Jacquizz is a fear that I think you can put to rest quickly. I don't see much similar in their build or playing style. Penny's frame sits well with his height/weight and playing style. It lends towards him being able to become a threat in any phase of the game at the pro level.