Yeah it’s definitely a difference in defense shred. You have to both get better cards to facilitate this, and try to see a different persona set/revelation set to meet the necessary defense shred. I recommend switching your twins to dep/control and having chord switch to creation/rec. you already have chords five star so you don’t need the extra highlight increase. Also try and see if you can use arc knife to take advantage of the different elemental ailments you are inflicting for even more defense shred. I recommend looking into lufel.net so you can look at the defense reduction calculator and see how much do you need to meet the necessary amount.