But despite being technically more true 3D than Doom, the effect was less impressive, overall.
Doom, by restricting the view angle, was able skip or precalculate a ton of stuff, enabling it to deliver full screen action with a decent framerate. UW was confined to like 1/4 of the screen. Add to that the tricks Doom pulled with lighting and skyboxes and it was just a lot more impressive.
Perhaps a bigger element of it being a 'revolution' was that Doom ep1 was shareware, so everyone had it. And it was multiplayer. So it was installed in high school computer labs, and in offices etc.
We're in full agreement here. I did play a lot of UW, but nothing compared to the days upon days spent in Doom playing local deathmatches, or the single player maps or TCs, etc etc.
Doom is one of the best games ever made, I just took issue with the "before 3D was even remotely possible" bit