CD-RW UltraSpeed burned by slim drive is Z-CLV instead of P-CAV?

P-CAV would start at 16×, the bare minimum of CD-RW UltraSpeed, like Z-CLV. But it would maintain that rotation speed (this would equal ×38.4 at the outer edge) until reaching 24× CLV equivalent speed by laser position.
Then, 24× CLV would be maintained until the end, making it 24× P-CAV.