You're either still missing the point, ignoring the point, or trying to start a different conversation altogether.
The question was what makes a boxer great, and you said an MMA contract. That is clearly inaccurate since few if any top MMAers have good, let alone great, boxing skills. You may prefer MMA to boxing, you may find it more interesting, but that does not change the fact that your comment was inaccurate. If anything, the opposite of your claim is correct. A skilled boxer, judoka, wrestler, etc. can be trained to become a successful MMAer but so far the opposite has not proven true. It doesn't matter that you personally prefer apples to oranges.