Oh, I think I have a decent enough grasp of the math to agree with you that high-HPs and high-Str correlate to the point that one might overshadow the other in this equation.
However, for the purposes of uncovering a unit cost equation, the correlations need to be explicit.
What I mean is, if you tell me 'HP base is 2/3 Str, with a direct proportion after that', that is a lot more helpful as a gauge of making units. If that is what is necessary to make the equation truly useful, then I'd really like to have that.
