The Detroit Lions are 3-1. They are 2-0 in the division and since they currently hold a tie breaker over the Chicago Bears we can effectively say they are in first place in the NFC North. Since we know a football team is more than the sum of its parts let us take a moment to look at those parts individually.
We now look at the folks that catch passes from the Lions. We already know this is a pass first team, and they will go back to the pass in key situations. They look for the passing game to extend drives instead of grinding it out on the ground, and that is just a philosophy of this coaching staff.
As a team the Lions have made 100 receptions for 1,262 yards and 7 TD's. Five separate Lions have caught double digit passes. That is good since this is an offense predicated upon the philosophy of spreading defenses out. It also helps when a guy goes down, like Nate Burleson (19 catches for 239 yards), with an injury. Calvin Johnson leads the way with 21 catches for 312 yards and 4 scores, but we should mention that both RB Reggie Bush and Joique Bell have caught a combined 29 passes for 386 yards and a TD.
The Tight Ends have not been as productive, and we all know about the struggles Brandon Pettigrew has with holding on to the ball. However he has made 12 catches for 92 yards. Joseph Fauira has only 4 catches but two of them were for TD's. When we add in Tony Scheffler's three receptions we see an offense that uses its TE more as extra blockers than as down the field threats. To be fair Pettigrew came up big in the win over the Chicago Bears had a number of clean catches and helped the team get some tough yards over the middle.
All in all this team has done fairly well in the passing game, but the running game is playing a larger role and this is a more balanced offense that it has been in recent seasons. Given that and the struggles of Pettigrew and getting the TE's more involved in the passing attack it seems fair to give the pass catchers a B+ grade for their work so far.