You must be reading the wage opener by applying it exhaustively in a joint collective way. That would be incorrect. The wage reopener was not joint but was inserted into each separate contract and applies in the context of the twu contract for laa, and iam contract for lus.
In application, it not only remains consistent to have one metal cross utilized, as opposed to 2, but its also currently being applied that way. I believe you are misinterpreting it and i am not convinced the language allows you to blanket the protection. Hopefully, you are correct and all 1,250 laa are now protected from laa in ord, not just 60 lus.