I don't buy it. Every gen and revision claims more efficient use of CPU and GPU, faster ram and what not. At least the mid gen refreshes will look like a noticeable improvement with extra raw power.
Console generations have changed. New gen, new efficient hardware, small power increase. Mid gen pro consoles bring the power increase. Split into two updates instead of one. The best improvements will come from faster loading speeds, finally no more chugging 5400 rpm hdd and a data bus to actually make use of SSD. Perhaps I don't have to think twice about entering a house anymore in RPGs, is it worth the wait or not. Faster restarts will make Souls games more bearable as well.