So he got ko'd in the center of the cage because of fences and elbows....ok buddeh
Without elbows he would not be stunned on the ground, and would not be knocked, fight would go in totally different way.
There was no wire fence and no fence clinch in Pride ring, and Kongo, Mir and Schaub fence clinched him for 3 rounds.
Big round space of octagon neutralized in a large way his entire K-1 kicking game that he had in his prime.
Lot easier to avoid strikes there than in the ring. In octagon you can defend by footwork and movement, and staying out of reach, lot harder to kick target that is constantly moving and circling around, same like it is a lot harder to shoot moving target with gun than static fixed target in front of you. Lot harder to find right distance, timing and angle for kick in octagon than in the ring. In the ring movement of target is a lot easily restrained and restriced by ring cutting, stalking, ropes and closing to corners.
You can't defend that much by movement and distance management in the ring, you are forced to defend with blocks there, and Cro Cop had perfect "double threat" game of LHK, middle kick and left straight, and any block would leave you open on the other place. Target was forced to stand in front of him with no space to escape in the ring and was forced to recieve the strike. Just watch Eddie Sanchez fight. Eddie, he who is not very good was able to defend by circling and moving around in big round space.
You seem to know and understand very little about how combat works.
Better start using your brain, and accepting arguments and facts.