[jollyjumper]

makes perfect sence.
lets see:
needed power to move car or truck to 60 kmh in 2.5sec's:
1100watts (not exact, just a guess)
L can motor more maxx power:
1200 watt (again, its an example.)
XL can motor max power:
1500watts.
so L can is working at: 91%
xL can is doing: 73%
of there maximum power.