It would be a ridiculous waste of money, and resources.
To take 2 of the biggest draws, and put them on one card is a fail. Two separate ppv is the smarter business decision.
It probably wouldn't sell much bigger than each of them separately. So, no matter who else is on either card. You're going to get more buys between the two cards, as opposed to just one. It could actually end up being quite a big number, too.
Many many millions of dollars to be sure.
A landmark card like 200, or 205. Is about the only way you'd see them together on the same card. Even then, it's unlikely.