Are you joking?
No, it;s not trash talking their life expectancy, couse it doesn't refer to their life expectancy in this context. The only thing "giant" means in the fight context, is that they are big, powerful and intimidating which are all positive, desirable traits in this buissnes. Migdget means they are small, puny and weak (compared to the rest of the roster), which are things that people don't like. That's why one term in this context is positive, and the other is deregatory. This isn't rocket science. Health problems that come with being freakishly tall, are completely outside the meaning of "Giant" as used by Anik in this situation.