Kai is great. He just should have come in ten pounds lighter with crisper conditioning. He's massive, but with his muscle density, you look even bigger when you're sharper.
Phil looks huge and SHARP, with ridiculous muscular detail and no stomach bloat. That's the difference.
The MD guys (Shawn, Flex, Dorian, Farah) seem to think Kai should be second, or at least been in the final comparison against Phil instead of Jay.