I was just thinking the same thing.
Xbox 360 to Xbox One was 240 to 1300 gigaflops, right?
5x jump vs 4x jump isn't that much of a difference.
Yeah, but that was arguably an underpowered jump relative to a regular transition - a sacrifice in Microsoft's quest to ensure from an early stage that the system would have 8GB of ram for all their multi-tasking media plans.
5x isn't really the norm.