Im coming around to the "short" CB idea. I mean gut instinct. I dont want a built in handicap. If life was perfect, I'd have a couple guys that look and catch like Jordy Nelson, and tackle like a mini-Mathews.... But reality. I hate reality.
I relate it to my love for shorter RBs. Barry Sanders being the proto-type. Low center of balance. Legs like tree trunks to run through arm tackles. Can change direction , and be back up to full speed in 2 steps. more quick than fast...but fast is a big plus...
I would suspect, given a CB is reacting, unlike Jordy Nelson who has his steps planned from the snap. Change direction, and back to full speed in two steps..... Quicker than fast, with fast being a plus. Since 1 second of hesitation can mean 5 yds of being burnt in a pass route. Quickness is just as important as speed... I see many of the same traits desired from RB to CB, with power a premium at RB and speed for CB...... So in theory, the low center of gravity, and quick twitch quickness that smaller and shorter guys have, is very desirable CB traits....
Outward appearance seems lopsided when our 5'11 200 lb CB stands next to 6'5" 245 pound Megatron.... But the first goal is to get there before the ball does. Once that happens, we at least have a fighting chance! If we are the half step behind, thats when those big boys can hurt you...
note. I still prefer bigger CBs. Randall is 5'11 200 pounds as a rookie. Not small. Just not big