If it was a Lavadome then they won't be triple butted...
...or were they?
Can't remember the weights but the standard P2 has straight edged drop outs whereas the TB fork has nice curved drop outs; I think
I hate these early starts!
This should help...
I'm sure you can forget about triple-butted high tensile, there's no such thing. It will simply be the use of thicker, but still triple-butted, tubes to withstand the greater forces near to the axle imposed by disc brakes.
The specifications for the 1997 t-b P2 said "High quality triple butted blades with internal wall thickness decreasing from top down (1.3/0.8/0.5mm). By having the thinnest tubing in an un-raked area at the bottom of the blade, the fork provides shock absorption at the wheel and stiffness at the crown."
A 1997 P2 weighs 835g, and even that is heavier than the 1995 version (785g), so already there had been strengthening. Steel rigid forks can be built lighter than that, but it all depends how stiff you want them for accurate steering.
When they first brought out P2s with disc tabs it was only on the plain-gauge version, which was presumably a sign that the 0.5mm part of the tb fork wouldn't be strong enough. Just guessing, but say the current tb P2s are made of 1.3/1.0/0.8, that would probably take the weight to 1,000g rather than 835. Still cromoly, still triple-butted, but stronger.
Also, I wouldn't rule out that they have put extra weight in the steerer. My P2 has a 1mm thick steerer. A steel Z2 steerer is 2mm thick (and weighs 270g). That's quite a difference.
Looking at the weights quoted there I'd say yours is probably not