We all have our own definitions of reality. I find UFC to be very unrealistic due to the fact that I can't use weapons and my friends can't help me and the terrain is limited to a ring, also the fight is at a set time
I've seen little guys run over the big guys on the street but they didn't do it by standing in front of them or by playing by "rules."
This reminds me of a thread with Skorzeny on Brazilian jujitsu. I was willing to stipulate that BJJ is the best one on one unarmed fighting system there is...but that still leaves the BJJ guy with two major problems related to fighting me: 1)finding me alone and 2)finding me unarmed.