Oh my God.. 3D Studio Max is beautiful... *tear* I figured out some of the functions I used to used to use in Blender and watched some videos and I am very very impressed, I seriously doubt I will go back to Blender now.
I dunno about 3ds but in Blender UV coordinates are properties of the polygons (in OpenGL they're properties of the vertices). Perhaps Wings doesn't remove the welded polygons in order to keep the UVmap intact. Try importing into Blender and see how it looks. Try running a remove doubles over it.
Unfold3D's got move, translate and scale, and some nice auto packing features as well. Grab the demo version. Obviously Blender's got those too, not sure if you're one of the types who'd rather drop some cash on a commercial product before wrestling with Blender's UI.