To be fair I think Phil is a careful trainer rather than Kai being able to out train I have not seen one impressive piece of training from Kai ...
Oscar and desmond miller pulling 500lb of his chest while he ego trains doesn't mean he's stronger than Phil
I was looking at how Phil performed those movements, especially pull ups, and it reminded of when Dorian was showing Kai and Oscar how to do a certain movement (I believe it was for back) and they were doing it wrong...
In that vid, I noticed Phil is more vocal, more willing to "get things started" for the camera, to suggest a exercise...If you one is Mr. O, you can't take a backseat, you have to show either thru body language or verbally that you are Mr. O. And this vid i believe was taken before Phil won the title.