Re APS Weight,
AFAIK it is mainly used by British carriers, but it can roughly be translated to "corrected DOW".
/fs
btw: many carriers have the mtow for their 752 as low as eg 108860 (Monarch), 104324 (United) and 99700 (British Airways)
Carriers apply with their local caa to have their mtow reduced, in order to save $£ on landing and overflycharges (usually calculated from mtow) and maintenance costs (expensive any which way you look at it!)