bullshit, teddy is the strongest, due to the fact that its hard to breed a numemon, also need to take care it with extra careful, numemon is the weakest among the champions, you will need an extra digimon device to make numemon battle the rookies to get at least 40% win rate, then it will evolve into teddy. exclusively , no other method can do so, while the virus metalgreymon can be breed with any champion lol