ok, my question is that how to make pokemon as trong as one in battle factory? same pokemon, same nature but my trained pokemon always has lower stats than one in battle factory, do they all has 35 iv?
I'm not sure if the Battle Factory Pokémon are EV-trained, but if you want your Pokémon to be stronger, you need to EV train them. Here's some more information on Psypokes.
yes, i checked some source and see that pokemon in battle factory have 31 iv at least in the field match their nature, having them in my team would be great