I would imagine the Sky subscriptions would be pretty much the same in them both allowing for the square footage.
As for the difference in beer prices that's simply down to buying power which Whetherspoons have, so much so that they can buy beer cheaper than normal because it is coming up to it's sell by date and comfortably sell it while still in date.

But the difference being Wetherspoons don't have Sky.
It's like Sam Smiths pubs, they have the bare minimum and their beer is cheap.