User blog comment:Xilinoc/Ch. 630 - The Twinned Twilight/@comment-25383931-20150611091628/@comment-1338810-20150612034608

There's also the possibility that Ichigo doesn't have his old Visored powers anymore since his power reboot. Hollow Zangetsu is the manifestation of his Shinigami powers now; there might not be enough actual Hollow left in Ichigo to make the Wandenreich properly afraid of him. Unless maybe the endgame plan is to have Yhwach absorb Zangetsu and fatally poison himself with whatever's left of White in there.