Actually, Ex-Meredeth was in a couple gatchas before this event. Nutaku has run out of content for Angelic Saga (original game is closed) so we'll see old event again, new events with already known cards such as this one or new Nutaku made cards (which tend to be pretty OP with meh art)
And about PvP, season just started recently, so it's more likely to have powerful players roaming the 1200 mark than other dates. I don't play tournaments, so i don't know how much it taks for it to level itself up. And if it's about arena, then yup, there a good deal of ople with good decks under the 1200 mark just becaus they don't do PvP. I myself have a max lvl Blue Dragon, and several SR ad Rena in the 50-70 range with a score of 1162.