Analysis of information sources in references of the Wikipedia article "Collision in Korea" in English language version.
The all-time pro wrestling attendance record would be for shows on April 28 and April 29, 1995 at May Day Stadium in Pyongyang, North Korea. The announced crowds for those shows were 165,000 and 190,000, although the real numbers were about 150,000 and 165,000. The first show was headlined by Scott Norton vs. Shinya Hashimoto and the second by Antonio Inoki vs. Ric Flair. While there were tickets sold, most of the people attending got in free and were pretty much ordered to attend, so it's not a fair comparison.