Ok, lemme help you guys out. On ESPN and many other site, you can look at the "Splits" section of any player to get a boatload of situational information. For Schaub go here: http://espn.go.com/nfl/player/splits...15/matt-schaub
If you look at the bottom of Schaub's page, you can see passes by distance, which is what Cak is using to create those stats. You can do this for any QB, and find similar stats for other positions. The one important to the discussion is passes of 31+ yards. You can see the ranges in this pic:
Note that these are passes in the air, which is why it shows incompletions. If Schaub throws a pass to Foster at the LOS and he runs it 80 yards for a TD, it won't be in the 31-40 stat shown, but it would show up in the stats Silvrhand was looking at as a 40+ yard play. That's the big difference. Check out Schaub's 21-30 yard passes to see his big deficiency.
The second set of stats in that list shows Schaub's stats based on field position. If you look at the 19-GOAL line, you can see his Red Zone stats. However, don't combine the 19-GOAL and 10-GOAL or you will be double-counting the stats. Schaub had 22 TDs this year, 14 of which came from the Red Zone.