DXB regularly requires 180kts to 10nm final and 160kts to 4nm. We get plenty of A380's here and they don't often complain about those requirements. Sure they do slow down a lot from 4nm and some other types don't slow down much at all but you just learn to compensate for that.
I believe that LHR has the extra benefit of only having to apply sep til the first aircraft gets to 4nm which would make life easier though.