Jethro has a(n) in all aspects of camping: he is faster at carrying a backpack, gathering firewood, paddling a canoe, setting up tents, making a meal, and washing up.

Jethro has an absolute advantage  in all aspects of camping: he is faster at carrying a backpack, gathering firewood, paddling a canoe, setting up tents, making a meal, and washing up.

absolute advantage is an ability that a person/organization have to perform way better at a specific task compared to other person/organization.
another example of absolute advantage: countries in the middle east have an absolute advantage in oil business due to their massive oil resources.