I can’t figure out how the gearing works at all, and it’s bothersome Blizzard hasn’t clarified (if you’re reading this Blizz, please put out a statement on how it works).
Some people say it’s based on the gear in your bags. Some say it’s average of your gear (maybe average of highest ilvl of every slot? who knows).
There’s probably something to this as well. I’m at 629 and I’m still getting 630 repeats because some of my stuff is much lower, and others much higher. But I can’t figure out what or how. I have a 610 trinket I carry in my bags/equipped (been testing if it matters). Is that sabotaging me? No idea.