I disagree with this, unless they upgrade this element along with the seat. I had a wholly mediocre food/service/drinks experience (and very poor angled seat and pretty tattered aircraft overall) on a recent OS trip (from BKK).

Never taken AC J, but LH is always excellent in the food and service in my opinion. That said, I totally agree with 787fan that the seat trumps all, which means that UA is even worth considering compared to the old LH or OS angled seats. (Plus the new UA entertainment is far better than LH or old OS.)