The Memphis letters don't interlock. Ours do and so does Madrid.
Our font is closer to RM than Memphis (but they're all different).
Memphis has two colors, we have 3. Madrid also has 3.
Potato, potahto.
I just remember seeing someone wearing a RM jersey on the subway a few months ago and it struck me that there was a sort-of, kind of, similarity to the logos, aside from the major difference of the crown. Never suggested we ripped them off. Had the same reaction to Memphis and us.