Guys,

All wings need to be at a high AOA in order to create lift. in a typical tailed aircraft, either the wing is positioned at about 1 degree positive, or the horizontal stab at about 1/2 degree negative. In a tailless aircraft, the wing cannot be positioned anywhere in relation to the rest of the aircraft, since the wing IS the aircraft, so the control surfaces do the job of putting the wing at a high AOA, thus generating lift.

I hope, I have explained it correct.

BRG
Chris