>>96527909
>thats also in ad&d with armour flooring movement at a certain rate, so thats extra credence to it being meant as the way it was to be
It's written even more ambiguously there, but yeah, I agree that that's what it generally means. Specifically, it's unclear what the difference between armour bulk and armour max move speed is.

I suspect the reason for my interpretation is that LBB1 doesn't use a dual/worse of system (at least as far as I can tell), and Mentzer's Expert (picrel) explicitly tell you to use one system OR the other one, not the worse of the two. So I kinda assumed that B/X must have been in agreement with LBB1 and Mentzer rather than AD&D.

But yeah, the worse of the two / AD&D system is MUCH superior.