If they had put all benches in TCF Bank Stadium and painted the seat numbers in as tightly as a at Camp Randall and tightened up the rows it would seat more people than Camp Randall.
So much for your "tiny stadium" position.
Camp Randall and Kinnick (hole in the ground with 12 inch bench seating) are highly overrated. If the demand ever calls for expansion a 80,000 TCF will make Camp Randall look awful by comparison. With its East German inspired architecture, and obliteration of any historical aspects of the original stadium, it already pretty much sucks.