I'm not quite sure about this, but I dont think the minimum weight limit of the Tornado has changed over the years. So a plywood tornado would weight about the same as a production boat.
BUT, there would be a huge difference in stiffness of the platform.

The Gougeon T's was cold moulded with western red cedar and had a hull thickness of 6 mm. They also used an internal support structure to add stiffness. I dont think the plywood T's had anything like the same stiffness.

The yearbook has some information about the hull shapes, but by far not enough to build a boat from. If you got the measurement templates, the allowable hull lines could be deducted..

I read in Seahorse, that there is a Gougeon T in sweden still sailing. Dont remember their exact words, but I think it was quite stiff compared to the Marstrøms. The hull forms has evolved a bit since the 80's, so we dont know.

But, it would be interresting if a wooden T could be competitive!