I'm pretty sure it's not possible...yet at any rate, but who knows? Nobody thought a score of higher then 1.44 was possible on UC at the beginning of the year --- https://www.youtube.com/user/TheWorstType PSN: TheWorstType RE6 Mercs
There are still a lot of good players in Mercenaries. Long as you see players hosting, especially the Japanese and Chinese players, they have very high scores and willing to keep scoring high. It's essentially the same as RE5 Mercenaries and Mercenaries Reunion literally after like nearly 5 years after release. A lot of players are still very much dedicated to the Mercenaries part of RE6, not so much the campaign and it's almost a year plus it's quite active in lobbies.