Every two windows version is a disaster. 95 nice, 98 sucked, XP was great, vista was a flop, 7 wow, 8 eurk, 10 marvelous, 11 is shit... They don't learn. But this time the goal is to make more money through adds, widgets and preinstalled bloatware.
95 was middling just novel, OSR2 was actually good.
98 was ok, 98se was excellent
ME was a complete unmitigated disaster
2000 was excellent in all shapes
XP was horrid, SP2 was good
The rest about right but honestly i think it's just that the second SP is when Windows gets good, not that every second one is good.