Only if Krookodile had wing !iF krokorok is established to be struggling against Air pokemon, he'll probaly work to overcome that. Krookidile is way cooler than Dragonite, esspecually with Sunglasses :DStone Edge was useless in Skyla's Gym & it got repel by Swoobat's Gust's !It's Krookodile, you know, the red one with more sinister looking patch in the eyes. Not to forget his awesome personality. Iris' Orange Barney is the grumpy one while the Ash's Red Croc is intimidating and badass. Yes, that red croc cannot fly and so, actually, was Garchomp - it was supposed to be based on Land Sharks why the hell it's flying?I don't Think Krookodile is cooler then Dragonite in any way !
Plus , Krookodile can't fly while Dragonite is one of the fastest flying pokemon !
Dragonite can easily take down Krookodile using Arial advantage just like in Skyla Gym.
Unless Krookodile know a Move that can shut down Dragonite Arial advantage but Krookodile can't learn any move like that!
And I can't think of any move Combination which can Create a Artificial Wing for Krookodile to fly like how Zoey did with Leafrion !
I wish Writer gave Ash a Golurk if they were planning on Giving Iris a Dragonite!
Atleast , Golurk would have been much better match for a Dragonite rather then Seismitoad or Krookodile !
and as @Ash's Battle Coach posted the red croc already has Stone Edge, which i think is super effective against Flying Type? This Pokemon was almost treated as dragon type. It can learn Outrage, Dragon Pulse, Dragon Claw and Dragon Tail. The only move it cannot learn via tutor is Draco Meteor. It can also learn Aerial Ace. Imagine a fight between Orange Barney and Red Croc. Orange Barney may have an advantage in the Air it still cannot fight underground like Red Croc can. It can dig its way and randomly throw Stone Edge under the ground. It can also use Outrage in a surprise attack or use either Dark or Dragon Pulse underground etc etc. There's a still lot more of possibilities and combinations.
I'd still prefer this
Plus, Krokorok couldn't deal with Vanillish in Brycen because it float in the Air!
Plus , Dragonite fast so it can easily evade Stone Edge !
Krookodile need more then just Stone Edge to deal with Dragonite!
Krookodile might had chance with ''Foul Play'' but I don't know how ''Foul Play'' work.
All I know that it use's Foe's Power against it so it would be super effective on Dragonite since he has a high Attack Star!
Although I would love to See Krookodile kicking Dragonite butt in Junior cup.