Unfortunately... That's not my point, here...
Yes, Pilo has a low usage rate, but the winrate means something when you're comparing the numbers.
Rotom has a higher percentage in winrate compared to Roserade.
We're talking about who the big threat in NU is, right?
What about Rhyperior? What about Spiritomb?
I mean, generally, if you (anyone in general, not you personally) view Roserade as a threat, having a spinner/defogger would be necessary and is an option in countering Roserade. I still go with mons like Charizard & Golbat, especially in the event you have one like mine that uses Extrasensory. With Charizard being weak to rocks, it would make sense to have a spinner/defogger on your team. I feel that looking at it in a broader perspective, as it's clear there are multiple ways you can deal with a Roserade, is important. There are multiple calcs shown as it is. I feel that the situation with Roserade doesn't even compare to the one where people actually had troubles countering Garchomp in OU.
Like, I'm even considering a Pilo, ya feel?