the picture feels more balanced, eliminate all the distractions(bottom right corner from the original), increased midtone contrast to make the subjects more appealing, actually reduced a 1/3 stop exposure to further darken the background, fixed the slight over exposure of the highlight, white petals in this case.
the disadvantage is apparent to do this in post processing, cut your resolution almost 50%; get frame and composition right in the first place to reserve picture quality.