This manga has the same problem Dragon Ball Z had.
Values for power levels and stats are basically worthless. None of it is given enough time to matter, it's just thrown in so the MC can say things like "10 million!?!" "Realm of E." I hope they stop talking about them and percentages soon.
Also, why is Lust suddenly an ally? She wanted Roxy dead, wasn't Envy working with her? This manga is a mess when it comes to establishing anything.