Here are my thoughts...
Front lat spread... not the best shot. Kai is square to the camera, Phil is at an angle... here's another comparison.
Close, but i think Phil wins. His muscle bellies are fuller, quads look bigger, arms thicker.
Front DB... again, not the best, but I think Phil wins this one no contest.
Side chest... probably Kai... his whole legs look thicker and a bit more cut, but this is VERY close.
... im too lazy to go through more, Phil wins.