You do hit upon one of the pertinent issues.
Another expample is a Tiger with an M8 Greyhound at close range and a Pershing at just beyond close range.
I could well imagine many a wargamer “having a bit of a moan” if the Tiger was forced to engage the M8!
In fact there are so many variables similar to the above, that the KISS philosophy will probably be foremost rules wise.
Again, many thanks for your thoughts. It certainly helps getting the old grey matter going….