You're trying to prove a point through conjecture rather than fact. We can "think" we know something all we want, but to actually prove something you need fact. You should have a "control" environment and a "test" environment. The control environment should have a heat source and two hides, as well as everything else required for a BP to feel safe and happy. The test environment can be used to remove and add differing factors to see how the animal reacts to the changes. Typically facts are collected after studying these changes over multiple animals/multiple years.
One animal acting differently because it's in an environment with no heat and higher elevations proves very little.