You know absolutely nothing about kickboxing. Nothing. JLB beat every single kickboxer worth anything in K1, save Schilt, who he fought when he was well past his prime. Yeah, his chin wasn't that hot, but he was the hardest hitter combat sports have ever seen, and when coupled with his undeniable heart and skill, you get a Top 5 all-time great.
He lost embarrassibgly every time he faced decent competition? Tell that to Hoost, Aerts, Greco, Filho, Hunt, Spong, Choi, etc. You know nothing, Jon Snow.