How big of a difference do you guys find that IVs actually make? I've been trying out some battles with my different IV Pokémon of the same species around the same level and it's not seeming to make a lot of difference. I have a ~40% Tangela and an ~80% Tangela, the latter being about 50 CP higher than the former and both with Vine Whip/Power Whip, but I'm not really noticing any difference in how good they are at battling. I don't know the actual IV distribution of either so it's possible they both have decent HP/ATK IVs and the worse one has bad DEF or something but right now I'm kind of left wondering what all the fuss is haha. How big of a difference are you guys noticing?