Who will win Mega Rayquaza or Arceus?

Rayquaza (Anime)

Pokémon - The MovieAsh, Misty, Brock
Raymond, Neesha, Fergus, Corey, Miranda, Dr. Fuji, Amber
Mewtwo, Mew
Pokémon 2 - The Power of the IndividualAsh, Misty, Tracey
Lawrence III, Maren, Carol, Melody, Tobias
Slowking, Lugia, Arktos, Lavados, Zapdos
Pokémon 3 - Under the Spell of IcognitoAsh, Misty, Brock
Molly Hale, Spencer Hale, Lisa, Skyler
Icognito, Entei
Pokémon 4 - The Timeless EncounterAsh, Misty, Brock
Diana, Towa, Mr. White, Sam, Vicious
Celebi, Suicune
Pokémon Heroes - The MovieAsh, Misty, Brock
Annie, Oakley, Bianca, Rossi, Lorenzo
Latios, Latias
Pokémon 6 - Jirachi: WishmakerAsh, Maike, Max, Brock
Butler, Diane
Jirachi, Groudon
Pokémon 7 - Destiny DeoxysAsh, Maike, Max, Brock
Tory, Prof. Lund, Rafe, Sid, Rebecca, Audrey, Kathryn, Yuko
Deoxys, Rayquaza
Pokémon 8 - Lucario and the Secret of MewAsh, Maike, Max, Brock
Kidd Summers, Sir Aaron, Lady Ilene, Lady Rin
Lucario, Mew, Regirock, Registeel, Regice
Pokémon 9 - Pokémon Ranger and the Temple of the SeaAsh, Maike, Max, Brock
Jack Walker, Phantom, Lizabeth, Ship, Kyle
Manaphy, Kyogre
Pokémon 10 - The Rise of DarkraiAsh, Lucia, Brock
Alice, Tonio, Baron Alberto, Maury, Allegra, Kai, Alicia, Godey
Darkrai, Dialga, Palkia
Pokémon 11 - Giratina and the Sky KnightAsh, Lucia, Brock
Zero, Professor Newton, Infi
Giratina, Shaymin, Regigigas
Pokémon 12 - Arceus and the Gem of LifeAsh, Lucia, Brock
Sheena, Damos, Marcus
Arceus, Dialga, Palkia, Giratina
Pokémon 13 - Zoroark: Master of IllusionsAsh, Lucia, Brock
Ken Kodai, Goone, Roswitha, Karl, Joe, Thekla, Peggy
Zorua, Zoroark, Celebi, Raikou, Entei, Suicune
Pokémon - The Movie: Black - Victini and Reshiram / Pokémon - The Movie: White - Victini and ZekromAsh, Lilia, Benny
Damon, Carlita, Juanita, Mannes, Mako, Tatsuki, Leeku, heroes of desire and reality, king of the lowlands
Victini, Zekrom, Reshiram
Pokémon - The Movie: Kyurem vs. the Knight of RighteousnessAsh, Lilia, Benny
Cobalium, Terracium, Viridium, Keldeo, Kyurem
Pokémon the Movie: Genesect and the Legend AwakenedAsh, Lilia, Benny
Mewtwo, Genesect
Pokémon the Movie: Diancie and the Cocoon of DestructionAsh, Serena, Citro, Eureka
Gitta, Argus, Tiziana, Terz, Uschi
Diancie, Rocara, Xerneas, Yveltal
Pokémon the Movie: Hoopa and the Battle of HistoryAsh, Serena, Citro, Eureka
Baraz, Meral, Ghris
Hoopa, Lugia, Latias, Latios, Proto-Kyogre, Proto-Groudon, Mega-Rayquaza, Dialga, Palkia, Regigigas, Giratina, Arceus, Reshiram, Zekrom, Kyurem
Pokémon the movie: Volcanion and the mechanical marvelAsh, Serena, Citro, Eureka
Alva, Dohga, Ether, Flamel, Kimia, Nikola, Raimund
Magearna, Volcanion, Zygarde
Pokémon - The Movie: Your Turn!Ash, Verena, Konstantin
Axel, Boniface
Entei, Suicune, Raikou, Ho-Oh, Marshadow
Pokémon the Movie: The Power within UsAsh, Risa, Callahan, Torsten, Harriet, Margo
Kellie, Rick, Mayor Oliver
Zeraora, Lugia
Pokémon: Mewtwo Strikes Back - EvolutionAsh, Misty, Brock
Dr. Fuji
Mewtwo, Mew