Having flown both over the last 10 years the answer is:
MTOW of our B732 53070
MTOW of our B733 63276
On a one hour ten minute sector the B733 burn average about 3200 kgs and the B732 (Hush kit) averaged 4000 kgs and the B732 (non hush kit) averaged 3600 kgs.
The B732 crz at .72 and the B733 at .75 (CI 28)
Our B732 configuration 122 seats
our B733 configuration 147 seats