If I have a 9" x 1/2" tenon glued in a well fit mortise, does that joint have the same strength as a 3" x 1 1/2" tenon glued similarly? They both have 9 sq inches of glued surface. Assume for the moment that they have no unusual forces acting on them - simply a pull apart force. Seems to me they should, but I'm hoping someone of the tech knowledge persuasion will pop in and provide some enlightenment.