I know quite a few people have been asking me to do this for a couple of days now. I've been holding off from doing it because I didn't get dusky gem yet. DISCLAIMER: This test, at least personally, wasn't done with decent accuracy because of the differentiating levels of amplification of the crosses. Labarum +10 amp / Level 85 legacy cross no amplifcation / CoBB +7 amp. Pay exclusive attention to physical attack of the ranger to the right. Setup for experiment: +8 6pc vow of silence /w +7 3pc Silent Prayer Sign of Protection + Slow heal (1 use / No slow heal TP sub equip swap): (In this one I accidentally used Heaven's melody but it shouldn't matter at all because it doesn't affect strength/phy attk anyways just HP/MP.) So yeah pretty much this cross is too overpowered. 4-5k additional physical attack is around 10-12% more damage output overall. Pray to RNGesus you get this cross. Edit: Please keep in mind this stats with no chronicle upgrades and with minimal amplification. Probably sometime in the future I will do this again.