I'm supposed to trust the analysis of fans that can't seem to get a player's last name correct after a half dozen years?
My take is Walter definitely starts the year at #2. Not 100% sure he will finish there, but to start I have nearly zero doubt in my mind about that.
The real fight right now is between Martin and Jean for #3. My take is they end up splitting the #3 spot situationally (down,distance, play call, field position, etc) - as you have two completely different cats there physically. If one is too eventually beat out Walter, I'm thinking it's Jean - and it's not based on talent but on size, stature, weight - let's see if the guy can block. Until he can block well, it's Walter's job.
Posey makes the team as the #5 guy who slowly works into the rotation as he continues to grow in a pro WR, or takes a heavier load should an injury occur.
Holliday is #6, takes all the returns and works in on offense with a few trick plays, and maybe a screen or two over the year.
So this is the final roster at WR:
#1 - AJ
#2 - Walter
#3 - Jean
#4 - Martin
#5 - Posey
#6 - Holliday