Interestingly the HE-111 and HE-177 had a bigger bomb payload then then the B-17 series. The Lancaster, Halifax and B-24 had much bigger bomb loads.
Stolen from the net:
B-17E:
Empty Weight: 33,280lb
Loaded weight: 53,000lb
Max Bomb Load: 4,000lb
Range: 1100 miles with 4,000lb
B-17F:
Empty Weight: 34,000lb
Loaded weight: 65,500lb
Max Bomb Load: 8,000lb
Range: 1,250 miles with 6,000lb
B-17
Empty Weight: 38,000lb
Loaded weight: 65,500lb
Max Bomb Load: 9,600lb
Range: 1200 miles with 6,000lb
B-24D:
Empty Weight: 32,605lb
Loaded weight: 71,200lb
Max Bomb Load: 12,000lb
Range: 1400 miles with 8,000lb
B-24J:
Empty Weight: 38,000lb
Loaded weight: 71,200lb
Max Bomb Load: 12,800lb
Range: 1540 miles with 8,000lb
B-29:
Empty Weight: 71,360lb
Loaded weight: 138,,000lb
Max Bomb Load: 20,000lb
Range: 1950 miles with 20,000lb
Halifax Mk.I:
Empty Weight: 33,860lb
Loaded weight: 55,000lb
Max Bomb Load: 13,000lb
Range: 980 miles with 13,000lb
Halifax Mk.III
Empty Weight: 39,000lb
Loaded weight: 65,000lb
Max Bomb Load: 13,000lb
Range: 1260 miles with 13,000lb
Lancaster B.I:
Empty Weight: 41,000lb
Loaded weight: 72,000lb
Max Bomb Load: 14,000lb
Range: 1040 miles with 12,000lb
Lancaster B.III:
Empty Weight: 41,500lb
Loaded weight: 72,000lb
Max Bomb Load: 14,000lb
Range: 1040 miles with 14,000lb
Lancaster B.I (Special):
Empty Weight: 36,000lb
Loaded weight: 72,000lb
Max Bomb Load: 20,000lb - Grand Slam
Range: 660 miles with 20,000lb
Heinkel He 111H:
Empty Weight: 17,000lb
Loaded weight: 30,8650lb
Max Bomb Load: 7,165lb
Range: 910 miles with 6,000lb
Heinkel He 177A-5:
Empty Weight: 37,038lb
Loaded weight: 68,343lb
Max Bomb Load: 13,225lb
Range: 1200 miles with 11,000lb