1. Call a spade a spade: it was a mismatch from the start. There was never any doubt on the result of the match. Even the betting odds were 4-1 in favour of Mayweather.
The fight proved that Mayweather still has his boxing skills intact. This is not unusual, given he is young and is gifted with natural fighting ability. Other fighters had come back from retirement and made impressive wins. One good example is when Sugar Ray Leonard came out of retirement to win over the Marvin Hagler.