It all comes down to touring style. And the park you are in. Assume that in the past, your day at DHS was simply not complete unless you rode:
TSMM x 2
RnR x 3
ToT x 2
Not everybody did this. We are told here that "most people did", and that "few people did". We just don't know. But the fact is, some did. I was one of them. There is no math that you can apply to this problem to make that day easier or faster to accomplish now than it was in the past. And it shouldn't be easier. Remember that there is a profit objective in this for Disney. Do they want to make you more efficient and faster, or less efficient and slower? Do they want you to add a day or two to your trip in order to accomplish all the things that you want, or do they want you to chop a day or two off of your trip so that you can go stay at Universal for a few days? It simply cannot be the case that Disney implemented this system so that people could accomplish in 4 days that which they used to accomplish in 5. But if it turns out that this is what they did, and that people can now tour the parks faster and more efficiently, leaving them with extra days to go see Harry Potter, then somebody is going to get fired. There are no absolutes here. Maybe some people can ride 23 rides in a day when they used to only do 18. But if that is happening, then Disney goofed.