A Ford F450 isn't a half ton truck. Very few people buy them just to drive around. So I fail to see any comparison to a half ton F150 people mover with a bed.Half-ton pickup trucks can pull different amounts of weight. The weight a truck can pull is called its towing capacity.
Ford F-450 is a good example of a half-ton truck. It can pull a lot of weight. But, the exact amount depends on the truck's engine and other parts.
To find the max towing for a specific truck (Google it) or, look at its sticker or ask the dealer.
Remember: Its not only about the towing capicity, but tougne weight is an equally important factor.