Now that pokemon are no longer ranked by CP, are IVs still relevant?
As in do higher IV pokemon perform better in battle? Is it worth evolving high IV (90+) pokemon with low-ish CP (like halfway along the arc) vs lower IVs (70-90) and high CP? Is the higher IVs worth the extra stardust investment?
Higher IV Pokemon do better in any circumstance compared to lower IV Pokemon. Besides the fact that CP is higher at good IVs, also the Individual Values themselves are better. That’s why higher IV Pokemon are better. A 100% IV Pokemon has all its stats maxed out (Atk, Def, Sta, Sp Atk, Sp Def, etc.). In comparison to a 80% IV Pokemon who has its stats at 80% out of 100%.