Well it's not a problem per sé, it's more of an observation that keeps being confirmed because it just keeps happening.
Besides, observation is not dogmatic, if it stops happening I will adjust my view. So that's not dogmatic.
Having a general "rule" or "assumption" and sticking with it no matter what your own observation tells you is dogmatic. That's not what I'm doing here.
I originally also had the assumption that axis was generally stronger than allies but with what has happened to me recently has changed that belief (I'm not saying axis is always weaker than allies but they are certainly not stronger, at least not anymore). In other words, I experienced something and adjusted my view accordingly and that's anything but dogmatic.
Statistics gathered from many thousands of games are more reliable than your personal experience.