Probably the best way to look at things like this is to compare the 7 games that were played versus their lowest SL figures if there is a desire to dig out something negative.
So, for the 7 games played this round:
SL lowest combined = 45,918
SL highest combined = 76,090
2013 combined = 55,117
So, whilst some of the crowds were low (3 of them were the lowest SL crowds for those games ever) - as you can see the combined amount is almost 10k higher than the worst total.
I think people sometimes forget how low some crowds were even 10 years ago.
As for taking Leeds' and Wigan's crowds out, why the hell would you do that? Their crowds have been low at times during SL - I'm sure people didn;t want to artificially boost these then.