Sharper is 'sexier'...he has big stats, on a 13-0 team, and some big highlight real plays that have caught a lot of attention.
I don't know who votes on these things, but unfortunately 'sexy' can be quite persuasive relative to the intangibles that Woodson produces every day which can't show up on a stat sheet, and consequently are mainly noticed only by people who watch the packers each week.