If Ryan gets past #3 (which i don't think will happen), the Jets will either trade up for him to #4 ahead of KC, KC will take him at #5, the Ravens will trade up to #5 ahead of the Jets to take him, or the Jets will take him at #6. If all of these things fail, Carolina or Baltimore will trade up to #7 for him.
IMO the whole "Ryan will fall" story is a smokescreen from the numerous teams that covet him.