I didn't mention attempts, so I'm not sure what point you are trying to make.
However, one could argue that LeFleur treated him more like a limited QB in Week 2, having him throw more short passes to the RBs. That definitely helps your completion percentage. Throwing shorter passes makes it seem like he played better, but I don't think that he really did.
The Saints and Lions had similar game plans defensively for Rodgers and the offense. The difference was the coaching staff recognizing the need to feature Jones out of the backfield to take advantage of the matchups on linebackers, and for Rodgers to take the underneath stuff. When teams play 2 shell, it eliminates a lot of opportunity for big plays.
To the captain's point, Rodgers executed the game plan near perfectly.
Rodgers against the Saints:
15 of 28 (53%)
133 yards
0 TDs
2 INTs
4.8 yards/att
36.8 rating
14.1 QBR
Rodgers against the Lions:
22 of 27 (81%)
255 yards
4 TDs
0 INTs
9.4 yards/att
145.6 rating
76.5 QBR
I don't always leap for the stats because it doesn't tell the entire story, but any time you see that huge of a difference in numbers, you really don't even have to watch the game to understand that he played way better against the Lions.
Even disregarding the numbers, I have no clue how your eye test came to the conclusion that both games were even in the same galaxy as far as being similar.