@The Living Tribunal1: I must respectfully disagree, my friend. Whether or not Beerus is capable of measuring a person's full Ki, or just the current Ki level of a fighter is as of yet unexplained and I doubt it ever will be. In my opinion though, I still believe a God of Destruction who has countless fighting experience and is evidently a trained martial artist would not be fooled by a deception so trivial.
In other words, base Goku being stronger than Freeza is mere conjecture based on an uncertainty which will almost certainly never be explained, and cannot be determined under any circumstance. On the other hand, base Goku being weaker than Frieza is a fact supported by an unambiguous statement from Beerus.
You know which is more reliable between a fan-based conjecture and a canon-based fact, don't you? If the fact cannot be disproved by anything other than canon facts or canon powerscaling (NOT hypothetical fan interpretations, conjectures, "feelings" and definitely not shitty YouTube videos), I will consider it to remain a fact and that valid argument will hold. In effect, I can and will continue to use that fact for calculation purposes without any disputes regarding the source of the calc.