When elements of other genres leak into DND, it's wonky.
And what is an "element of other genres"?
My version used classic D&D trope effects.
"Smash ground for a shockwave"
"Spin weapon for a mini tornado"
Both happen in Fantasy style adventures (The first was the mainstay of Bobby the Barbarian from the D&D cartoons when I was a kid, and I think Diana the Acrobat did the staff twirling wind tunnel too).
I was using the "Crouching Tiger" reference as a power scale not an idea where it comes from.
Plus the tornado part isn't needed - as flying things are awake (or they would have fallen to the ground) so can be insulted into attacking - thus just leaves the classic "Earthershaker Smash" for moving unconcious things.
How an effect is produced by the Martial source is just a matter of imagination. I gave one option, there is bound to be a million more you can choose. It is a game after all, the limits are The Rules (that your DM chooses to use) and your Imagination (for how those rules work).
I see no reason to change the rules just cos someone's imagination doesn't cut it. Change the rules because you think the 'new' option is better in some way (cinematics, feel, mood, balance) but not just because "I don't see how that works" or you just cripple peeps for not going with a magic class - to get the "Magic did it" defense.