Um. I'm not sure that's how that would go.
I am nearly sure it would work like that.
Just a thought experiment. It is unlikely to evade forever in a small cage or ring. However I have seen fights, where it worked for a while. And if there were such a talented aikidoka, who agreed upon showing up in a tournament, he would at least be able to set some punches and kicks for scoring.
It was an exaggerating description about where the differences are.