Re: Pure punching power....do many top mma and k1 guys hit harder then boxers
The kickboxer Jerome le Banner was a tremendous hitter in his prime. Back in the day he knocked Matt Skelton unconscious in one round using just his fists. This is a Skelton who, in later years, went on to have a very successful career at British domestic level and was known for his toughness and excellent chin. In fact those were his defining traits, since he badly lacked in technical fundamentals. And let us not forget that Vitali Klitschko, one of the most dominant stoppage artists in heavyweight history, was originally a kickboxer.
Kickboxing, especially K-1 rules kickboxing, emphasises all out aggression and rewards those who can deliver it. Powerful Shannon Briggs type guys thrive in that environment. They also (speaking of K-1 again) have a very lax steroid testing system, which results in overmuscled freaks who'd gas in five rounds but are absolutely devastating over three, which is the length of a K-1 bout.
It's pretty rich people talking about lack of technique here when you've got chubby brawlers like Arreola making a name for themselves. Fighters like le Banner and Mike Bernado had excellent punching technique, and were very capable of delivering crisp explosive knockout punches in combination. Ray Sefo, who actually had a short abortive boxing career, was a huge one punch knockout guy, just not a great boxer obviously. Mighty Mo had mammoth power, and knocked out the iron headed Valuev of K-1, Hong Man Choi, with a single overhand right. Neither of those guys made it in boxing because they lacked the technique and perhaps the versatility to adapt to their new environment. In Sefo's case he was too aggressive and unsuited for the longer pace of boxing matches, in Mo's case he was simply too crude. Didn't mean they didn't both punch like the clappers though.
Le Banner actually had a bit of success in boxing, and was good enough to draw Don King's attention back in the early 2000s. Ultimately, he was getting too good of a deal of it in Japan to make the move permanently (he might have also realised that King was an absolute snake, and didn't want to get involved).
Ironically it was the far cruder and less talented Skelton who made a career in boxing, because he was determined to make a go of it after numerous bad decisions convinced him to leave the world of kickboxing behind.