I’ve had an issue with Resaw King breakage as well. I never considered the fatigue from a 14” wheel, but it sounds like a very likely possibility.
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Tool guy I grew up with also does woodworking as a hobby. He says steer clear of them. Something about how they braze all that carbide that makes the band brittle. I've seen and heard about their high priced wonders breaking on saws of all sizes, not just 14's.
I have tried Carbide blades for resaw, and problems exist, The Carbide is good a long long time, but the marriage seems to be the problem. I personally have never seen long life from TW blades, and have almost completely swapped to Starrett blades for all my functions. I just look at a known price, versus a pretty repeatable length of use, and feel like they give me the best bang for my buck as anything out there. That is since BC saw quit Bandsaw blades. I cried the day I heard that. They used to get all my business.