Calvin Johnson caught two touchdown passes to give him a new franchise record of 63 for his career as the Lions took sole control of the division with a 21-19 win, helped also by the Green Bay Packers' loss to the Philadelphia Eagles.
"We came out with a victory on the road against a really tough team. It was a hard-fought win," Schwartz told The AP.
"Proud of the players, but that's the only thing that means [anything] today. I mean first place, you don't get any prizes for first place there nine games into the season."
The Lions now have a 6-3 record for the season and will face the Pittsburgh Steelers on Sunday.