Don't you mean 'played'?
I don't think it would make any difference at all on a saturdays attendance if the 2 lowest clubs were shown on SKY.
Fans already make their mind up that they are going to a live match whether it's on TV or not.
It's quite easy to prove for SKY.
This saturday they could use channels to show all 3pm games and the FA can tot up the gate fees.
I think you're wrong about it not making a difference to attendences. I know from when we have a midweek game that people say they would rather stay home and watch the EPL or CL. The affect would be seen in the loss of some semi-regular fans who are now faced with the choice of watching Man U v Chelsea instead of Dundee v Cowdenbeath.