First of all, this is not a typical all on similar settings kind of shootout and AAS has used zoom on 808, Lumia 1020 and SGS 4 Zoom whenever needed. Hence Lumia 925 is certainly one at disadvantage. Also, even crops are not from similar size ratio, but according to the need.
Anyways, it is fun to see even with advantage of optical zoom, SGS 4 zoom trailing behind both Lumia 1020 and 808 in final scores. Worth noting is the fact that Lumia 1020 has shed the macro capture weakness of 808 PureView. It is certainly a good read and in all sets crops are from top left, clockwise: Nokia 808, Nokia Lumia 1020, Samsung Galaxy S4 Zoom, Nokia Lumia 925.