Total horsepower is about the same but notice the torque and rpm difference between the two motors.

Here's the 7XL on 16 cells at various amperage;
~~ [19.2 volts, 30 amps] ~~
voltageconstant: .0080
Kt: .0107 (oz-In/I)
rpm: 45334.2240
powerin: 576.0 watts
powerout: 485.3160 watts
HP: .6505
efficiency: 84.00%
torque: 13.44 oz-in

~~ [19.2 volts, 40 amps] ~~
voltageconstant: .0080
Kt: .0107 (oz-In/I)
rpm: 45200.8320
powerin: 768.0 watts
powerout: 673.6480 watts
HP: .9030
efficiency: 87.00%
torque: 19.20 oz-in

~~ [19.2 volts, 50 amps] ~~
voltageconstant: .0080
Kt: .0107 (oz-In/I)
rpm: 45067.4400
powerin: 960.0 watts
powerout: 860.8600 watts
HP: 1.1539
efficiency: 89.00%
torque: 24.96 oz-in

~~ [19.2 volts, 60 amps] ~~
voltageconstant: .0080
Kt: .0107 (oz-In/I)
rpm: 44934.0480
powerin: 1152.0 watts
powerout: 1046.9520 watts
HP: 1.4034
efficiency: 90.00%
torque: 30.72 oz-in

~~ [19.2 volts, 70 amps] ~~
voltageconstant: .0080
Kt: .0107 (oz-In/I)
rpm: 44800.6560
powerin: 1344.0 watts
powerout: 1231.9240 watts
HP: 1.6513
efficiency: 91.00%
torque: 36.48 oz-in

~~ [19.2 volts, 80 amps] ~~
voltageconstant: .0080
Kt: .0107 (oz-In/I)
rpm: 44667.2640
powerin: 1536.0 watts
powerout: 1415.7760 watts
HP: 1.8978
efficiency: 92.00%
torque: 42.24 oz-in

~~ [19.2 volts, 90 amps] ~~
voltageconstant: .0080
Kt: .0107 (oz-In/I)
rpm: 44533.8720
powerin: 1728.0 watts
powerout: 1598.5080 watts
HP: 2.1427
efficiency: 92.00%
torque: 48.00 oz-in

~~ [19.2 volts, 100 amps] ~~
voltageconstant: .0080
Kt: .0107 (oz-In/I)
rpm: 44400.4800
powerin: 1920.0 watts
powerout: 1780.1200 watts
HP: 2.3862
efficiency: 92.00%
torque: 53.76 oz-in



And the 7L on 16 cells at various amperage;
~~ [19.2 volts, 30 amps] ~~
voltageconstant: .0054
Kt: .0072 (oz-In/I)
rpm: 66789.7530
powerin: 576.0 watts
powerout: 475.5750 watts
HP: .6375
efficiency: 82.00%
torque: 9.60 oz-in

~~ [19.2 volts, 40 amps] ~~
voltageconstant: .0054
Kt: .0072 (oz-In/I)
rpm: 66582.6040
powerin: 768.0 watts
powerout: 663.7400 watts
HP: .8897
efficiency: 86.00%
torque: 13.44 oz-in

~~ [19.2 volts, 50 amps] ~~
voltageconstant: .0054
Kt: .0072 (oz-In/I)
rpm: 66375.4550
powerin: 960.0 watts
powerout: 850.7250 watts
HP: 1.1403
efficiency: 88.00%
torque: 17.28 oz-in

~~ [19.2 volts, 60 amps] ~~
voltageconstant: .0054
Kt: .0072 (oz-In/I)
rpm: 66168.3060
powerin: 1152.0 watts
powerout: 1036.5300 watts
HP: 1.3894
efficiency: 89.00%
torque: 21.12 oz-in

~~ [19.2 volts, 70 amps] ~~
voltageconstant: .0054
Kt: .0072 (oz-In/I)
rpm: 65961.1570
powerin: 1344.0 watts
powerout: 1221.1550 watts
HP: 1.6369
efficiency: 90.00%
torque: 24.96 oz-in

~~ [19.2 volts, 80 amps] ~~
voltageconstant: .0054
Kt: .0072 (oz-In/I)
rpm: 65754.0080
powerin: 1536.0 watts
powerout: 1404.6000 watts
HP: 1.8828
efficiency: 91.00%
torque: 28.80 oz-in

~~ [19.2 volts, 90 amps] ~~
voltageconstant: .0054
Kt: .0072 (oz-In/I)
rpm: 65546.8590
powerin: 1728.0 watts
powerout: 1586.8650 watts
HP: 2.1271
efficiency: 91.00%
torque: 32.64 oz-in

~~ [19.2 volts, 100 amps] ~~
voltageconstant: .0054
Kt: .0072 (oz-In/I)
rpm: 65339.7100
powerin: 1920.0 watts
powerout: 1767.9500 watts
HP: 2.3699
efficiency: 92.00%
torque: 36.48 oz-in