Only reasons i can think of is that PUP can't use Atheling, but can use Vallen, and Vallen is AH'able and most of the FFXI population is lazy as FK and think mobs like Orthrus are AV2.0 and impossible to beat without having no life.

Edit: also i think Pantin cape is better, 5DEX 15atk Pet:15ak vs 20atk 5sb.