I agree with Brian F, your arguments have a lot of flaws and it appears that you do not watch Mixed Martial Arts closely nor Professional Wrestling. First let me make some points about The UFC.
The Ultimate Fighting Championship (UFC) is the largest Mixed Martial Arts Promotion in North America. UFC has weight classes: Lightweight, Welterweight, Middleweight, Light Heavyweight and Heavweight. World of Extreme Cage Fighting (WEC) is a sister promton to UFC and has ligher weight classes such as Flyweight and Batamweight. There are other Mixed Martial Arts Promotions both in the United States and around the World, but I will focus on UFC. Brian F corrected you in telling you that UFC Bouts are 5 Minute Rounds. Non-Title Fights have 3-5 Minute Rounds and 5-5 Minute Rounds for Title Fights. If you pay attention to the backgrounds of the Fighers and the Play by Play Commentary, most UFC Fighters were top High School Wrestlers and College Wrestlers, they then trained in Martial Arts such as Brazilian Ju Jitsu, Muay Thai, Tai Kwon Do, Karate, Judo, Akido and other Combat Sports and they also learned submission holds. There is a lot of athletic skill involved in UFC bouts if you understand Combat Sports, that's why Stone Cold Steve Austin, The Undertaker, Shane McMahon among others are really big fan.
The best Professional Wrestlers also in my opinion have amateur wrestling backgrounds and bring athletic skill to the wrestling ring and I can appreciate the hard work and efforts that they make. Many of my favorite wrestlers: Bret the Hitman Hart, AJ Styles, Taz, Rick Steiner, Scott Steiner, Dr. Death Steve Williams, Owen Hart, Shelton Banjamin, Alberto Del Rio were amateur wresters growing up. I enjoy both MMA and Professional Wrestling and no a lot of people that enjoy both and we see no need to bash one at the expense of the other.