This is the worst I've felt about the Lions' chances at the #1 seed for awhile. Eagles play 4 of their final 5 games at home, with two of them (vs. Panthers, vs Giants) virtual gimmes. Will be heavily favoured hosting Dallas too. I guess at Pittsburgh and to a lesser extent at Washington poses some risk to them. But the Eagles definitely have a shot at winning out. It's a lot to ask the Lions to win out.
If the Lions go 4-1 as long as that loss is to Buffalo, the Lions no matter what would finish ahead of Philadelphia.
The Lions will clinch the division if they go 3-2 as long as two of those wins are over GB and Minnesota.
At this point, with 5 games to go, I'd say the most likely spot they'll finish is #2, but #1, #5 and #6 are all possible.