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3D wings are (typically) more effective and utilized for wings below roof line. Above, or equal to roof height, a traditional 2D wing is more effective. Hence why you see almost all roof height wing options from BW, APR, Big Wang, etc. being 2D design, and below roof line options like some APR and this sneed option being 3D.
A roof height 2D wing will generate MUCH more downforce than a below roof line 3D wing, and typically produces less drag as well. Since you can run a much less aggressive AOA and produce the same (and typically more downforce) with a lower drag penalty. Basically, a roof height 2D wing is much more efficient at producing downforce than any below roof height 3D wing.
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