A one-on-one fight against Regigigas? Is this the Elf Professor?

Su Lin is reborn in the urban elf world and awakens the Elf Doctor System. Is this the prelude to him becoming an elf doctor?
Fortunately, the research on Pokémon in this world is still incomplete, and Su Lin has a lot of potential to achieve with his knowledge of Pokémon!
The system is also very helpful; there are rewards for completing sprite research and system tasks!
And so, the many trainers in this world were thrown into chaos...
The Mega Swampert with its Devourer ability has no weaknesses and gets stronger the longer it fights!
Slaking, with its Hercules ability, breaks free of its restraints and takes on Regigigas, which is dragging tectonic plates, in a one-on-one battle!
Hmm? Who would be the best candidate for this levitation property?
The champion was dumbfounded: "Are you crazy?! You're really just a Pokémon Doctor?"
Su Lin: "As the most well-rounded Pokémon professor, it's not unreasonable for me to have several Pokémon that are hundreds of millions stronger, is it?"
You have completed your research on the Z skill and obtained the final weapon blueprint.
"Begin research on the ultimate weapon, infuse it with the life energy of the X God, and activate the eternal light!"