Barney vs Oleg.

5 reasons Oleg from 2 Broke Girls was a SUPERIOR sex maniac and human, far surpassing Barney from How I Met Your Mother:

Firstly, the canon lore shows Oleg has had over 1600 one night stands in America alone, whilst fans of HIMYM have deduced that Barney has only had about 300 at best.

Second, even though Barney seemed charming to most women he pursued, when you get down to it, he was simply a predator, they even once compared him to the Predator creature as a joke, even though Oleg would often follow and stalk women who said they didn't want to be around him, I'm sure he did it with a sense of dignity and didn't try to make up lies to get with them.

Third up, I'm pretty sure Oleg did not have any sort of playbook handy. Barney always bragged about the playbook, sometimes in very disturbing ways. Who could forget The my penis grants wishes?
However, when Oleg wanted to have sex on the beach for instance, he said he simply had to put on his speedo and wait.

Forth coming, I hate to bring up this fact twice, but Oleg was just a lot more honest than Barney.
He could even deduce when his boss was lying to him about his body odor. Even though Barney could jump rope with his own lies, Oleg would often admit that he had kept a secret, that he had oversold one of his sex statements, and when he was faced with deportation, though his fiancé Sophie did not take the truth-bomb very well... claiming he only wanted to marry her for a green card, Oleg made the "sweetest gesture" to prove that he really, truly loved her. Honesty is the key.

Five and final, Yes both characters were self proclaimed sex addicts and most of the relationships that they tried to commit to ended in failure or embarrassment, but there is one threshold that Oleg successfully crossed that Barney only essentially dipped his toe into, and that is settling down and starting a family.
If you watched the final season of How I Met your Mother, you'd know that the episodes revolved around Barney marrying Robin, of course in the real uncut ending it's revealed that they divorced after two years, plus they weren't able to have kids.
When Oleg and Sophie were married, you could see they'd put aside their differences in order to live happily ever after. And even after many months of trying to get pregnant to no avail, the fact that they could not keep their hands off each other is kind of cute, and eventually Sophie did give birth to their daughter, Barbra.

So there's my case against the Barnacle, he may have been Legend wait-for-it Dary,
but here's a little lesson to all you "irresistible" guys who think you're hot stuff, there's always going to be a bigger fish somewhere in the pond.

The end.