[jas_far]

Calculus and programming are in two different leagues of complexity, and most programming doesn't require a knowledge of calculus.

Like any other skill, programming comes more easily to some than others, but with the right approach can be acquired by anyone.

[SamReidHughes]

Calculus classes are more passable than programming classes, and the claim you're making is just pulled out of your hat, made in such a way that you could never be found wrong, because no matter what you could just say you're not taking the right approach.