Everything is the same between Column A and Column B except the amount returned for the Royal Flush. Column B says 800. To be sure, you will not see a machine saying it pays 800 for a Royal Flush. What you will see, however, are plenty of machines saying they return 4,000 coins for a 5-coin bet. This means they return 800 coins per coin bet, as long as you play maximum coins.
Every hand has a unique best play.
Another point to get clear here. Actually, we are both telling the truth. I am talking about your long run return if you play perfectly. This can happen on a Jacks or Better machine, but only when you have a generous slot club or you have a lucrative promotion going on. This is exactly the same as 9-6 Jacks or Better, except it returns less for both a full house and flush.