Again, we don't know. Therefore, anybody can say anything and no one will be right. This is why the fight needs to happen. This the fight that the whole world wants to see, and if Floyd was brave, he would make it happen, but he obviously doesn't want to take the risk.
If this fight happens it will be the biggest money maker in fight history. Why would Floyd leave an easy $100+ Million on the table and waste a chance to get an easy 50-0 and future movie deals?
Floyd doesn't believe that McGregor is an easy pay-day, he knows with is age and slowed reflexes, he would be one left hand away from a good night sleep. Maidana already made him do the chicken dance. Conor could put him to sleep.
The fight won't be that easy for Mayweather and Conor may get exposed also. We just don't know.