Jones has it right. If anything I think the move to Juventus has shown that Ronaldo is human like the rest of them. Don't get me wrong, he still scores at a great rate, but he's neither the best goalscorer nor the best player in Serie A this season, although I'm sure he'll pick up a couple of hype awards. What he offers up in that league right now is considerably less than the likes of Ibrahimovic and Higuain have done in the past, despite them playing for much worse sides.
There are a few notable points to be made about this. For instance, the way Real Madrid and Barcelona have generated goals for their strikers over the last two decades is unmatched in the history of the game. It has a lot to do with the concentration of power and talent in modern football, where all the best players in the world have pooled up at the Spanish superclubs since 2004 or so. There used to be a bigger spread of top talent in Europe, but unregulated investment and practically zero restrictions from UEFA and the national FA-s saw Barca and Real grow in an unprecedented way.
In the case of Messi and Ronaldo, you had two of the best players of the last 20 years playing for what's probably been the best squads ever assembled, at clubs operating in a European top tier of their own. That brings bloated goalstats, and not just for those two. Eto'o and Suarez had multiple 40+ goal seasons too; even as scrub like Pedro had a couple 25 goal seasons in Spain.
I think Messi would probably score on a more human level too (at least relative to other top strikers) if he'd been the one moving to Juventus instead of Ronaldo. His record for his national team suggests as much (as did Ronaldo's before he moved). What separates them is that Messi would still be the best player in the league by an absolute country mile even if he weren't the best goalscorer.