Are pliers with replaceable cutters really weaker?

Warning, the following post may be boring to some individuals. The Leatherman engineers mentioned at the AMA that the Bond and Curl likely have the strongest pliers because of the lack of replaceable cutters, but I'm having a hard time believing that's really the case. I've seen a lot of broken plier posts and from what I can remember, they almost always break at the thin section right above the LM logo (marked in red), or occasionally around the pivot or handle side of the pivot, which makes sense as that is the thinnest and weakest area with the most leverage on it. I don't recall ever seeing one break where the replaceable cutters are. That area is just as thin, but it doesn't have as much leverage and it has the perpendicular outer wall as reinforcement (like a piece of flat iron vs angle iron). It does have a hole for the screw, but I haven't seen that as a point of failure either. As they say, a chain is only as strong as the weakest link, and the weakest link should be where I've marked them in red. The logic just doesn't add up to me. I'm not a mechanical engineer, though I do pretend to be one in real life, and I consider myself mechanically minded. I feel like the replaceable cutters have become a scapegoat while the weak point is identical in all models. Has anyone ever seen a plier head fail through the replaceable cutters? My money is still on the Surge and ST300, which have an extra 3mm in width over the Free series in that section, and about 4mm over the Wave, Bond and Curl. They are also as much as 0.5mm thicker through the red zone than all those tools. Yes, in theory, the cutter area is weaker with replaceable cutters, but do they actually break there, or do people just blame the cutters because they've heard people say they're weaker? Am I missing something here? -KVP