ORIGINAL: dbsonic
Not sure if we are looking at rudders or stabs but..
FEJ - sub-rib is good but no spar running length.
SM - no sub-rib for main spar but they have another spar member running the length creating a D box. But they should have added a sub-rib.
SM looks like they added more significant material for the hinge points and another spar in the control surface(FEJ provides nothing again) but neither is quite satisfactory to me. Again close, but no cigar.
But I`m sure we are looking at an essence, rigidity is one thing.. There is so much into it, and the other thread will sooner or later reveale how things are, and should be.