Wing load and weight are directly proportional to one another huh? I dont think the overall weight matters as long as the wing area is proportional,,, which is what wing loading is.. The wing area in proportion to the weight.

I.E.... Whether its 5# or 50# or 5000# if the wing loading of an Edge 540T calls for 1# per 100 sq/in or whatever then anything over that its going to fly heavy, sink faster and be more prone to stall,,, anything under its going to fly light.. I think what 3D planes want is a wing loading that is LESS than what the actual design of the scale would call for so they are less likely to stall.. 3D planes like the UCD are designed with an extra light wing load for the same reason, like about 1# for every 133sq/in or somewhere thereabouts.. Thing is with the U CAN DO the wing load is SO light that you can afford to go to a heavier engine and STILL have a proportionally really light wing load.. I like the wing load right on the upper limit but where it can still do 3D maneuvers.. I like a plane with a high sink rate for elevators and junk like that...

Thats my opinion and its very much in laymans ideas, Im no aerospace engineer.. Just a thinking 3D guy..