Skipped Banners

http://fate-go.cirnopedia.org/summon.php#nav

That site lists the banners JP had. I dunno what banners your friend is speaking of, but you can check if they skipped them here.

Mmmmm. I don’t think so. To my knowledge, the NA game has been running primarily on schedule in terms of content

Nah, we don't skip banners
Just sometimes they can have changed order like Camelot 2, which was after Summer Event in JP and is before it in NA