I am going with Carlos here. There is a lot to be said about high level experience and while he doesn't have a ton of UFC success, he does have all of that cage time and experience. I think Nyam is talented but I do also think he will get frustrated when this fight goes long and Carlos will take over. With that being said, no money here, always hard to tell how good or how fraud some of these young undefeated guys are.
Carlos Hernandez
Carlos Hernandez is a grappler with ok striking. Striking wise he has solid accuracy and deceiving power. He isn't the most technically sound guy, but he has a nice jab with a straight that follows. He is another one of these guys that has slick BJJ but not much to offer for wrestling. He will take shots but they are usually stuffed and he ends up working with the upper body. He's been known to throw up hail mary submissions like flying triangles. He is coming off decision loss to Rei Tatsura
Nyamjargal Tumendemberel
Nyam is a powerful striker who has a wide base and bombs punches. He uses a very long step in jab to close distance and then he swings wild. He has no problem with a dirty pocket fight but he can be hit and doesn't have the best striking defense. He is always moving forward and always doing something. He is undefeated with 7 stoppages but is still relatively untested.