The important thing therefore is to understand what is making the difference!
Why is one location better suited to another for tf beekeeping?
Why, in the same location, did one beekeeper succeeed and another fail?
Having some idea of the reasons helps you overcome the difficulties presented by some locations.
That's why its good to understand the basic setting with the Theory of Living Things. Genetics plus co-evolution is the science of survivability, of flourishing, of population success or failure.
Applying it enables you to predict the likely problems, in any setting, and with any starting stock, and design solutions to overcome them.