1 billion lions vs every pokemon

To the people saying lions, have you considered how many Pokémon are a threat to nature simply for existing. Ninetales, Torkoal, and Groudon all have Drought, which is self explanatory, and Politoed, Pelipper, and Kyogre all have Drizzle which could cause floods. I think just that alone puts the lions at a severe disadvantage, and then theres 1000 other Pokémon in the National Dex that could manage from there. I think the lions are screwed, personally.

A billion lions is definitely a lot... But it's too much. Depending on the battle area, most of the lions would never even see a pokemon at all. They are surrounded by lions and with no natural prey, they'll be forced to turn on each other to survive. Some pokemon may be smart enough to make it a 300 type situation where only a handful of lions can fight a pokemon at once, ensuring that hundreds of millions of lions won't even have a chance to compete. Lions can cooperate with each other, but in those numbers they'd likely get stressed and fight each other, whereas the pokemon are likely to be lead by an intelligent pokemon like Mewtwo or even Oranguru and form better stratagies. I do like to be pedantic, so when the orginal prompt specifies lions, it technically doesn't say lionesses, making any chance of lion cooperation even worse.