You claim crowd size is the same.
Cardiff 2-2 Reading 21,406
Cardiff 1-0 Scunny 21,604
Cardiff 1-1 Burnley 21,307
Cardiff 2-0 Leicester 22,410
Average 21682
This February?
Cardiff 2-0 Bolton 16,013
Cardiff 1-0 Middlesbrough 18,720
Cardiff 1-0 Wurzles 21,018
Average 18583
Difference? 3,099
Drop of 14%
By the way, I fully intend to watch Cardiff City in the future. Unlike some, it will take more than the Premier League to drag me there.