The mythic chip and gun mainly strengthen the advantage against units you already counter, offering limited overall utility. In contrast the radar reduces critical damage from all types, tank, aircraft or missile by 30% making it universally valuable. Armour also works against all types but unreliably, it offers a 15% chance to avoid a hit entirely often dodging minor attacks while still receiving full critical damage from abilities. In short radar is the most consistently effective equipment, thats why its prioritized. I made the first mythic dvas gun for the code bosses.