>>45982479You want IVs explained, is that it?
PVE: get 15/15/15, the higher the cp the better. This doesn’t mean something less than perfect is worthless.
PVP: Great League has a 1500cp limit, Ultra a 2500 limit, Master’s is unlimited. For limited leagues, the majority of Pokémon (especially now after the level cap increase) are better with something close to 0/15/15, to get more stat product. CP is calculated by overall stat product. The attack stat is weighed doubly toward this total, hence why 0 attack lets you get more bulk. Pic related is an example of a 0/15/15 Altaria vs a 15/15/15.
This should explain a bit and help you understand what to keep and to discard
