I dunno, but the 757s I work seem to have no problem at all going from 210 kts gs to 120 kts in about 3 miles on final. That's just going on the radar data. In fact, if I don't control the speeds, the Cessna Caravans hauling freight will outrun the 757 on final.
160 kts on 4 mile final seems pretty tame. Some of the 738s and 739s can't go that slow!