There are really only two structural scenarios: Considering the knife locked open as a cantilever beam in the axial position, and similarly in the lateral position.
Wrong! There is a third axis, as well as impact strength in all 3 axis as well for the blade and handle. Then there is the blades ability to stand up to chopping and batoning from a proper heat treat. Plus the ability to stand up to violent impacts from being dropped while closed and open, and still usable. How "stout" is a knife that if dropped will not open if the handle has deformed? What if the knife's locking mechanism relies on an exposed thumbstud which was deformed on the impact? What if I had to use my knife closed as an improvised hammer? Do you think a G-10 slab will hammer or survive impacts better than solid titanium slab? Are these not things that a stout knife might see in the course of use?
From seeing hundreds of blades returned for warranty repair I can guarantee you that knives do encounter these things, and in my opinion a stout knife can and will be designed to encounter these things and remain functional.
If the knife is supported close to the tip, the SnG wins owing to its blade's greater section modulus. If the knife is supported further along the blade, the SnG wins on the merit of its stronger pivot and stop.
Wrong! What good is a stronger pivot supported by weaker G10 handle slab? Do you not think that the realtively brittle G10 will fracture and the pivot will tear out of it before the Ti of the Sebenza? This is why I say that no one can say which is stronger, only which is stronger in the scenario they cook up to make their choice come out the winner. Just as you have done! FYI you will not be able to break the pivot of a Sebenza without at least a 3ft cheater bar. I know because I have performed this type of testing on many knives including Sebenza "Bushing" style pivots.
Same is true with the cutting edge. There is just simply more material behind the SnG's edge to act as a buttress.
Depends on heat treat too. A brittle heat treat will chip out despite a thicker edge. I have personally heat treated a few thousand blades and can guarantee you with 100% certainty that heat treat varies from knife to knife and 2 samples from either company can vary widely in performance.
So, if you want a foldable poking and prying implement with superior integrity, the SnG bests the Sebenza. If you want a folding cutting tool, the Sebenza bests the SnG. I use folding knives to cut with, so I'm a Sebenza guy.
I want to agree but what exactly is "superior integrity" of the SnG? Likely some performance characteristics defined by you to make your choice the winner. I'm sorry, but comparing these knives you just can't make exact statements that apply to all scenarios with so many variables to each scenario. All we can say for certain is that they are both high quality, hard use knives designed for rugged use.
If you can't figure this out intuitively, just take a Sebenza and an SnG, stick them both in a crack somewhere, and stomp on them. Worst case, it'll cost you three quarters of a grand to see what's obvious to anyone with basic structural sense.
Sorry, but I'll take my real world experience over your "intuition" when it comes to these matters.
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