I know you like the last definition the most
Well you brought it up. I just found it amusing because I'm essentially a very juvenile man.

I think that you are probably still clinging to the view that as Man is the topmost organic life form on the planet, and Man is a mammal, it means that mammals dominate on planet Earth and by extension that a sea mammal, be it an Orca or a blue whale, must be the topmost oceanic predator and you do not want the facts to contradict your a priori conclusion
I have no such attachment and I'm really not sure why you think I have.

Earlier I said that this was like a game of top trumps. Actually that was only half right. This is like a game of top trumps where you insist on choosing the attribute that will be played each time and insist on seeing your opponents card before you choose and insist on playing the Mako Shark card every time. It's self fulfilling because every time someone makes any suggestion for an alternative you simply dismiss it on the basis of whichever attribute the Mako Shark wins on.

It could be the orca... no, the mako shark can dive deeper
It could be the tuna... no, the mako shark can swim faster
It could be the billfish... no, its sword won't work on the mako shark
It could be a sea mammal... no, it's the mako's hide is too tough for it's teeth
It could be the blue whale... no, it's enormous phallus creates too much drag and slows it down

OK, I threw that last one in for a giggle (I did say I was juvenile).

The most revealing part of all of this is your continued insistence that man is the top predator on the planet while maintaining that the one edge that put man in that position, namely his intelligence, is irrelevant as a predating strategy.