If asked to describe the appearance of my Fire Breathing Her Serene Imperiousness Indoors then I have to get to a safe distance, usually a different continent and whispered Gothic Horror then hide quickly

Dipbro Brainbomb as an Artist has a far better knowledge of persons with Salvador Dali like surrealist appearances and physical features than me.
It should be noted that Mrs Brainbomb's physical features are Classic Renaissance DaVinci style beauty

You have not defined the generic term ,"knowing"

As a respected Theologian.I believe I have a slight advantage in the Biblical Knowing of Young Ladies who dance in lingerie in nightclubs aquired when I was a Dashing Young Whipper-snapper before the Second World War.

Which Universe of the Multiverses interests you most?
Mrs Brainbomb and Her Serene Imperiousness Indoors do not allow us to compete and as a demonstration of our Courage we both acquiesce to their whims when expressed with adoring vehemence by our Spouses.

I am allowed to.play in the golf playing & Scotch Whisky drinking Universe of my imagination.
Similarly Mrs Brainbomb allows Dipbro Brainbomb to play in his Artistic Garden Universe which is like a Galactic Octopuses Garden with Submarines of all colours

I do not know. How much does MM know about the Universe and existence? How much does MM know about brainbomb?

And what rubric can we use to compare them? Knowing about the Universe is deep and profound. Knowing about brainbomb is reading a wiki article and musing about fishing. Both are useful knowledges, I suppose... but they are so very different.

Maybe we could use a rubrik's cube...

Does MajorMitchell know more about the Universe, and existence than brainbomb?