You'd think Z is a better matchup when Perk is on the floor, bringing him out to guard on the perimeter, getting him out of the paint (though he is matching up on KG now, he's slow, to say the least, but has better length against KG than Jamison who was being abused).
And on the pass it shows that these guys haven't been playing with Z for awhile, Parker expecting the cut to the rim while Z pops to 16-18 ft for his preferred shot.