Those quantities can't be compared. "Kg" is a unit of mass,
whereas "lb" is a unit of weight. You can't convert mass to
weight without knowing the acceleration of gravity in the place
where the mass is.
For example:
-- 75 kg of mass weighs 418 lb on Jupiter.
-- 75 kg of mass weighs 62.6 lb on Mars
-- 75 kg of mass weighs 27.4 lb on the Moon.
-- 75 kg of mass weighs 165.3 lb on Earth.
-- 75 kg of mass weighs 11.1 lb on Pluto.
It all depends where you take your 75 kg.
