When looking online at the Look Px series bindings, they will sometimes call it a Med or XXL. What's that all about? I though maybe brake width at first, but then they'll state the exact width in MMs in the same ad...
Typically XXL = 115mm brakes, the bindings are the same size (PX12-14 and PX 15-18) regardless of brake size.
Look has a branding (?) agreement with Dynastar, making a model binding specifically for the Pro Rider XXL at the time, color co-ordinated and the correct brake width.
I think the medium width bindings are 90 mm, standard might be 76 mm, large/wide ~105 mm (I have a new pair of these I will probably sell as I ended up getting the mediums)
There's an online retailer selling new Dynastar Sultan 94s with Px14 XXLs. Sounds like those brakes would be too large for a 94mm ski...