The suits will say that they have improved guest experience by creating an enhanced environment where phase closures no longer happen and that they did it without negatively impacting annual guest counts or per quest spending.
And there would be some truth to that. It would take a 15% decrease in attendance to offsite the revenue of the peak season 18% price hike in one day tickets sales. Loose math.... 100 tickets sold at $100 is $10000. Raise the price by 18% but loose 14% of your attendance, and your at about the same, 10,148. So if they are down 10 percent, they are truely still banking, $10,620. More money and less of a crowd to manage.
But not everyone buys one day one park and that 18% price hike vs. the off season (read that on forbes) does not apply to everyone ticket holder, but that is why these is only "some" truth to it. But as far as Disney vs Universal. Remember that MK can and does handle more then twice the annual attendance of Universal Studios Florida. MK's 2015 attendance was 20.4 million to USF's 9.5 million. I suspect USF lines will be maxed out long before MK reaches its old phase one capacity. And now with a bigger parking long and a higher capacity park (Hub expansion and New Fantasyland completed), plus a tier pricing plan that put in place to encourage off season visits, that truely the suit are not in panic mode.