No guys, that's really not it.
And I apologize for the "extreme" comment Randal. Your tut is very much one of the best on the net, it obviously wasn't created for my amusement - I shouldn't have belittled it.
Because you said you just did a 1992 LS and it worked - possibly this points to some special circumstance?
All I can speak to is that each of the independent shop mechanics, Lexus dealership mechanics, and private people who have done this job that I've asked in person - have all said exactly the same thing: "Advance the crank by one tooth - or do the job over again."
Again: If you follow the factory shop manual instructions which tell you to line up the belt's white marks with the crank and cams when set to TDC (crank) and aligned to the metal marks on the black shields (cams)... and then you release the hydraulic tensioner, Bam, that's it. The cams will rotate counter clockwise out of perfect timing. If you start the car, there is very little power, it shudders under throttle, and if you leave the motor running, within a few minutes you'll have a glowing passenger side (USDM models - obviously right hand drive would be "drivers" side in this case) cat and exhaust manifold.
This actually looks very much like what happens when you loose one side or the other's coil pack (glowing manifolds and cats) - but in this case it's due to not setting the belt off by one tooth on the crank.
I know - it sounds completely wacky - but that's why all the "alarm".
If you lived in my area (Tampa FL), I invite you to my spot to see for yourself. It's a comfortable working space (all things considered) and I'll supply the tools, beers and food