There is a subtle yet significant distinction, at least in my mind, between "hard use" and strongest.
As has been mentioned in this thread, cost is a factor to be considered when used a knife hard or for abusive tasks. Of the "strong" folders listed in the poll, the AD-10 is my favorite for a variety of reasons - not the least of which being ergonomics. For "hard" or abusive tasks it is not my first choice; I have "beater" knives for that and I do prefer a strong lock for those as well. When AUS8 Voyagers went on close-out I grabbed a bunch and have been quite pleased with how such an inexpensive knife can hold up to the hard use tasks I've put it through. That being said, even though I do not own all of the knives on the poll list, I suspect that all of them may very well be "stronger" than the thinner blade Voyager.
With my view of strength contra to hard use explained, I also like the Adamas and have "hard used" my D2 model. While the Axis lock may be strong, it relies on pretty dainty piano wire springs (Omega springs), has a mechanism that can get gunked up and would be harder to clean than some other types of locks - so I just keep these things in mind when choosing tasks for the Adamas. I much prefer fixed blades for field dressing game but if for some reason I only took a folder with me deer hunting, the Adamas would not be my first (or second or third) choice - though it is one tough knife with a strong blade and lock. For that reason and ergos, I much prefer the AD-10 over the Adamas
I also have a pair (tanto and clip) of SR-1 (lites) and 4-Max as well as a 4-Max Scout; all great knives. Due to cost, I would grab an SR-1 Lite for "abusive" tasks over many if not all of the knives on the poll list, not because it's better, but because it's less expensive. As for the 4-Max, what can I say? It's big, tough ... and heavy, so it and the 4-Max Scout get very little pocket time compared to the AD-10, or Spydercos or whatever else may be the folder de jour.
As for some of the other knives on the list, I just don't know from experience what I would be talking about as I've never owner or even held say a Hinderer or ZT308; though with my other very favorable experiences with ZT knives, I can see a ZT308 in my future.