The Detroit Lions are averaging 35.5 points per game, but offensive coordinator Ben Johnson still sees a lot of problems with the offense. The Detroit Lions may have the No. 2 offense in the league by points scored, but offensive coordinator Ben Johnson doesn’t quite see it that way. Through two weeks of the season, Johnson seems more focused on the shortcoming of his offense than the successes. “If anything, the first two weeks have shown us how far we have left to go,” Johnson said on Thursday. “But we’re not—I don’t think anybody right now in that room is…