"Arcane missiles does 3.5% less." 160/148 = 7.5% less
"overpowered damage drops by a little under 6%"...."So thats a net nerf of ~1% to damage during overpowered" ill spell it out pretty simple. lets even ignore the fact that spells now cost 33% more during overpowered. were talking about a 6% damage nerf, during a phase where roughly 40% of our damage occurs, and you can check plenty of logs to back up the fact that about 40% of an arcane mages dmg comes during overpowered. for example, a 600k dps mage in a 90 second span does 54m damage. 40% of that is 21.6m dmg during arcane power, which is pretty consistent with what ill pull with 15s AP duration (its 13-16 dependingon relics but AP duration is currently #1 simming relic so it shuold be 16s really). this is also without any of my logs being done using a whispers in the dark trinket which is the #1 simming trinket behind the KJ legendary trinket, meaning our burst will be way higher since were frontloading our damage further
so a 6% nerf on 40% of our damage (once again completely ignoring the 33% more mana cost) is 2.4% nerf alone
missles at 7.5% of (40-50% of our damage) well even assume best case and say 3%, so a 3% and 2.4% + the mana nerf
"In what world is this a nerf?" earth/azeroth/reality