Not true. Cro Cop had good hands but he was vulnerable to being blitzed. Cro Cop had a respectable amateur boxing background.
Not really. I've heard him say personally that his "results" are fake. It used to be about trust. You say you've had so many fights and wins and they believe you.
I've seen clips. it's on record that he competed in the world amateur boxing championships in 1997, he fought Alexei Lezin, Liakhovich among others. You're not going to find many in MMA especially back then with amateur boxing pedigree like that.