What needs to be taken into account is the amount of throws as well.
We've attempted the same amount of passes that Tom Brady has COMPLETED(209)
versus Alex's 145 completions out of 209 attempts. Alex has a 69% completion rate compared to Brady's 64% so its not far fetch the expand it.
Proportion of throwing attempts and overall yards matters. Because 64 extra completions theoretically
means a 40% increase in total yards and YAC.
Also offensive schemes matter greatly in those statistics - I'm sure at least 2/3s of Percy Harvins 667 yards are YAC because they throw bubble screens to him almost 5+ times a game. If we threw bubble screens as often as the Vikings did we'd probably have the same YAC as them.
[ Edited by sfout on Oct 30, 2012 at 3:05 PM ]