My guess is Boldin is the exception...
In his "Pro-Bowl Rookie year" 2003, he had Josh McGown and Jeff Blake for QBs...They had combined 57% completion, 18 TD, 21 INT, 6.1 YPA, and they had the worst Offense in Point Scored...
Still Anquan Bolding in a new team, new system, new Head Coach, new Offensive Coach, new QB coach and two different QBs splitting the season performed unrealistic for a "Rookie."...
In 4 years he has played under 3 different HC, next year he will have his 4th in 5 years. With just as many offensive coaches and systems changes as well as 4 QBS over the last 2 years he has still racked up over 1,200+ yards in 3 of the last 4 years...
Like I said Boldin must be the exception...