True, street fighting is not his field, maybe he would go down easier than we can imagine due to lack of ability to use his feet or protect them. You never know. It will make me the same happy
For what I'm definetely sure is:
If Tyson (in the past cause now he could be my grandpa hehe) wanted to adapt to K-1 or any other fighting sport he could easily do it within a normal time frame. Boxing is a huge chapter and you can't be a good fighter if you suck there.