Perhaps there were a lot of people that missed the first visit so they recycled some of the items. A far amount of people, myself included, misses Xur on his first visit. So maybe they looked at the game data, realized the ratio of warlocks to hunters/Titans was higher so the left it the same. You realize that you can only wear one at a time and the defense/attributes don't vary that much piece to piece. Good news is he'll be back Friday with something different, you'll have more time to get rare coins.