Can you back up your sipping statement with some figures.
Typical figures are 3,600kg/h for the B752, and 3,000kg/h for the A321-200. (these are subject to all sorts of variable / caveats, but are a reasonable average)
The B752 will however lift more, go further, go higher, and do it slightly faster.
I challenge anyone to get on one of the recently re-fitted aircraft and describe it as "an old shed".
DW.