Look at an aerial view of our stadium at kickoff and right after halftime (really the entire second half is bad). There are no teams with our lineage that has a crowd that sparse.
Yes, at some FSU/UF/etc games the corners aren't completely filled out, but the lower sections are densely packed.
I'll also admit that part of it is the stadium itself. Seats are so spread out that a crowd of 50,000 is spread out and adds to the "thin" effect. I agree with the poster that suggested us tarping some of the upper sections. This would condense the crowd and make it look fuller.
Most other stadiums don't have 4 full upper deck sections. ****, even the OB had the entire East Endzone missing (palm trees, scoreboard, etc). This is why 45,000 in the OB looked pretty packed. They were more condensed.
Hope that makes sense. Kind of rambled a bit.