User blog comment:KnocknickKnock/9 gates + master of the celestial realm/@comment-24066070-20131208182752/@comment-24264679-20131213045323

Caelum isn't the strongest key shown so far and magical power doesn't really mean a whole lot with Celestial mages. Caelum was able to hit Leo only because Aries was blocking him. As far as magical power is concerned I can't say Lucy and Angel didn't have a similar amount Pre time skip because each key takes a different amount of magical power to summon. All of the keys Lucy were summoning were gold and Leo, taurus and Aquarius are amongst the strongest spirits so they take more magical power than Gemini, Aries and Scorpio. With that being said Lucy still had enough magical reserves left to cast a powerful spell. Angel had more magical reserves than Lucy but not by much she just was wiser with the use of it plus her spirits were weaker.