From the data provided by Turbine_D at post #126 the Trent is lighter than the GE..?
Trent882
Engine weight (dry): 12,009 lbs.
Overall length: 172 inches
Fan diameter: 110 inches
Thrust at TO: 80,711 lbs.
Thrust during Cruise: 15,917 lbs.
SFC (cruise): 15.66 mg/N-s
GE90
Engine weight (dry): 18,200 lbs.
Overall length: 187 inches
Fan diameter: 123 inches
Thrust at TO: 85,716 lbs.
Thrust during Cruise: 15,432 lbs.
SFC (cruise): 8.30 mg/N-s