also, regarding the premier league v the bundesliga.
in the 2015-16 bundesliga, there were 866 goals scored in 55,080 minutes (34 games, 18 teams, 90 minutes "per game")
in the 2015-16 premier league, there were 1,026 goals scored in 68,400 minutes (38 games, 20 teams, 90 minutes "per game")
so, 1 goal every 67 minutes in the premier league, one goal every 64 minutes in the bundesliga. hardly a huge difference, imo