According to CompuBox, Marcos Maidana landed more punches last night than anyone ever has against Floyd Mayweather in the 38 Mayweather fights they've worked over the years. Maidana landed 221 punches on Mayweather over the course of the 12 round fight.
It's also worth noting that Maidana landed at a much higher percentage than most Mayweather opponents do, but also, obviously, worth noting that on his power punches, Mayweather (46-0, 26 KO) basically couldn't miss, and he landed a gaudy 65% of his power shots against Maidana (35-4, 31 KO) on his way to the majority decision win.
Also, those photos are old as hell.
This may also say something about Mayweather's lack of power these days at 147 pounds -- which was never great to begin with -- as usually if you have a guy landing half of his power shots, you see a knockout or a stoppage at some point. Mayweather may have lightly shaken Maidana a couple of times in the fight, but he was never in a position to really go at him and look for a stoppage. Maidana, though, also never really hurt Floyd, even as much as he did land, and considering his reputation as a puncher, that may also say something about his power at this level.
Or maybe they just both take really good punches and are both good fighters. That's possible. I know it sounds crazy to say that both guys in one fight are good, but it does happen.