there are not many similarities between a B474-400 wing and a B747-200 wing! for a starters, they are made from different materials and different alloys, saving a vast amount of weight, and there are subtle differences to the aerofoil profile, not just spanwise, not to mention there are a lot more composite components in a -400 compared to a -200
now an SP wing...........
it would be interesting to see the comparison between cruising Mach numbers of a B744 and the A380, have they sacrificed a higher speed cruising wing for greater lift at approach speeds considering the rather larger amount of weight it has to carry?