It can't be. In a simple lockback the part that does the locking also takes the force of the blade tang closing, or of chopping action. I've never had a lockback that didn't develop play over time.
In the Tri-Ad lock, the stop pin takes all the force of closing/chopping, while the locking lever only locks the blade. In addition, the blade tang and locking lever are designed with wear in mind.
So while they seem to function identically from the outside, they really are two different type of locks.
Having said that, I recently sharpened a friend's Pohl Force Alpha One, and it is the most rugged backlock I ever saw. Solid as a rock. Still, I'd like to see what happens if I chopped brancheswith it for an hour or two...