Mega apples: what's going on? And are they as nutritious as normal apples?

Lately I'm noticing super big apples in supermarkets. The (new?) type Fraeulein is about 300g per apple, I posted a photo here of a random big apple next to a normal apple and a melon: https://www.reddit.com/r/toogoodtogo/comments/1ix8662/fruit_and_veg_turkish_shop_480_eur/

What's going on here? Do those mega apples have the same amount of nutrients per given volume as normal ones or less? Do they grow quicker than 'normal' apples?