It's more of a qualitative assessment than a quantitative one. Using Sony's console business as the yard-stick, they're doing much more poorly this time around.
There are a number of reasons for this:
1. The PS2 hardware was a definite leap ahead of the competition until the xbox came along, and MS was brand new and late to the party
2. The PS3 came to market a year after the 360
3. The Wii has "enough" horsepower for great 480p games, and the new control scheme is very innovative
4. Sony is now driven to a large extent by their media division. This is why they damaged their image by introducing a root-kit level music-CD DRM approach, and why the PS3 sold very poorly in 2007 due largely to it's stratospheric price-tag, which was in part due to having a built-in Blu-ray player.
Overall, Sony isn't run by morons, so I expect they will lick their wounds and come back with a vengence next generation.