It's only negative cause the majority of people hate Mayweather, if you enjoy boxing and the beauty of Mayweathers movements and counters it was a decent fight. The fight due to the sytles and anticipation was never going to live up to the hype, if you a legit boxing diehard you will enjoy the fight if a casual not so much.
BTW did anyone watch the under-card and see the Ukrainian fighter who had a amateur record of 396-1, with his only loss avenged twice. This has to be arguably one of the greatest records in any sport I have ever seen.