I don't think he was piecing him up at all, he was just touching him most of the time, these kinds of strikes are not significant.
It's like Conor touching Floyd, and some people losing their mind at Conor's strike count, comparing it to other boxers like "Wow, Conor landed more strikes than Sugar Shane Mosley" etc, when the kind of power being delivered is completely incomparable between the two.
When you're so short, fighting such a tall, long fighter, it's a given that you will get touched much more. Sean did land some good strikes, but most of them were not significant. Petr landed less strikes, but almost all of them were significant.
Saying stats don't lie makes no sense, because there's a reason we have judges, otherwise you would just count strikes and give the round to the higher number, but that obviously doesn't tell the story of the fight.