It makes a lot of sense for people who want to use their miles to
fly domestically, those who don't have much flexibility
on their travel dates, or travelers looking to book more than a
single ticket at a time.
That chart has some real values, such as the ability to
fly business class between the US and Europe for 90,000 miles roundtrip instead of the usual 100,000, the ability to pop around Europe with several extra flights thrown in for 115,000 miles in business class instead of 100,000 miles roundtrip plus another 20,000 miles for each and every additional intra-European flight, and the ability to
fly to Australia in business class via Asia (not normally allowed
on a
single award
ticket) for an extra 25,000 miles — and make stopovers in Asia, and throw in Australian domestic flights at the same time.