Are tropical fruits healthier than non-tropical ones +why?

It’s probably an unexplained assumption but i’ve heard that fruits that grow in tropical latitudes(e.g-pineapple,passion fruit) are healthier than those which grow in temperate latitudes (e.g- apples,grapes)…….truth or myth?

If it’s true then why is it so?

I could see this being true. I havn’t done any research on it but I guess that tropical fruits have more exposure to the sun and would contain more vitamines that northern fruits would be low on.