I've noticed that when using my 5* R4s and R3s, most of the matchups are all 5* R5s, even though I've passed the deathmatch mark.
Before the EMs, when fighting with a team of R4s or R3s (after the DM mark) would match you up with teams that were around the rating of your team, meaning R4s or R3s, even 4*s R5s. However, there's about a 24k difference between my team and the team I was matched up with (17992 vs 42899).

Is this happening to anyone too?