I think in a vacuum it's pretty even in terms of "talent". Kaprizov might even be just a tiny bit more creative and skilled. But for me, the size difference becomes a tipping point. Rantanen's ability to use his size to really lean on guys and make those plays under tight checking is an x-factor when comparing these two. Even though Kaprizov's lack of size obviously doesn't hinder him much since he's so slippery and strong on his feet. It's just one extra tool in Rantanen's belt that Kaprizov simply doesn't have available to him.