

Mm and mm are very different. Mg and mg are very different. Mbps and MB/s are very different. People lacking basic education to be able to read units properly have to deal with that themselves.
They are not the exact same. Somebody else already talked a whole thread about the reason as to why.
What I would argue for is every company at least all advertising the same unit, so that when comparing it becomes easier to do so.
Nah man at this point you are purposefully ignoring the bits that are being sent to your device which are then converted to bytes so that your pixels can communicate the letters that are forming words to you, from which the sentences are apparently too difficult for you to understand.