Yes it is totally different. Most 3D foamies are made out of a fairly rigid foam sheets like Depron or BlueCor. These sheets are available in different thicknesses and with some cardon rods are strong.

The planes made out of EPP foam are forgiving, bendable, and flexible. Check out their vids, one of them shows the guy throw it at the ground, nose first, tailfirst...whatever no problems. You cant do this with one from F.F. or H.L........