Tested another couple of folders and a fixed blade as control on hardwood branches, for the continuing adventures of, or better, my hypothesis that folding knives are stronger than many think (ones on the cheaper side too, but still decent). A Spyderco Endura 4 (FRN FFG), a Benchmade Griptilian (the most expensive out of the lot; newer S30V steel version), and a Mora Companion. I threw a wildcard in too, a similar sized non-utility folding knife, a Cold Steel Ti-Lite. The Endura 4 and Griptilian performed about the same as the Ontario RAT-1, but not as well as the Spyderco Resilience due to it being the largest. The Ti-Lite didn't do that well due to the blade not designed for cutting, but still did it. Nothing came loose on any of them. The Mora Companion, the control, a small fixed blade, performed about the same as the utility folding knives; it was more comfortable due to the rounder, beefier handle.
So, it appears I have a working theory. Decent folders, regardless of price, can be as useful as small fixed blades of similar size for outdoors and utility purposes whilst being far easier to carry (you don't notice one clipped on to yourself). Survival might be different, but I'm looking at general use. If just hiking or exploring with no need to chop or clear stuff, I'd just go with a folder personally, but that's me. The RAT-1 in AUS-8 is probably the best deal, as it's the cheapest out of the lot and held up as well as the others. Autism out, I guess.