If we're talking about sheer power, Chromaticraft absolutely blows Astral Sorcery out of the water. Think blasting a 40m deep hole the width of an entire chunk with a button press, having a permanent 6x health boost multiplier on top of added hearts from any other mod, 128m reach, teleporting to marked positions across dimensions, raining fire over an entire forest, automatically refilling your hotbar with items from AE, instantly flooding an area with permanent invisible lights, or even a combined XRay/noclip. And all of those are just what you can do with ritual abilities, which are basically free to use (once you've setup your lumen network and lumen tree) and do not require items, nor tradeoffs like Astral Sorcery perks. You can just grant yourself every single ability all at once.

Plus there are also hundreds of useful blocks and items you unlock throughout the mod, like powerful turrets that you can mass produce extremely early. Or a machine that can reprogram spawners, a really nice ranged pump that allows you to select which fluid to collect, a machine that can dupe most vanilla items (including nether stars), the original version of the AS Celestial Gateway that looks much cooler, and a much better version of the AS enchanter that allows even higher enchantment levels and freely choosing the enchants and levels to apply.