Is this a set-up? Are you trying to set me up? You are, aren't you?
Just kidding. That is a really loaded question, but a fair one. I wasn't even thinking of O'Reilly, or anyone else really, when I typed that, but it does sound like it. I'd hesitate to go that far because of what ROR has done since entering the league. I really liked ROR at Erie, but his immediate NHL production and play caught me by surprise. If Pu could come close to matching that, I'd be understandably thrilled (as would we all). But I have my doubts that Pu will be able to drive offense like ROR has done in his career. On the other hand, Pu has another gear that ROR doesn't, and his numbers (yes, it's the OHL) have been consistently, and at times surprisingly, solid. I would probably give the on-ice awareness crown to ROR, and he's proven that he's a top-flight, borderline Selke candidate...but then again, Pu is very solid in all three zones and he is borderline elite in the face-off circle. I'll add here that much like some of the ROR slumps in Colorado early on, I'm equally unfazed by the Pu scoring dips. As you can probably tell, your question has me thinking out loud here.
In the end, I think the better way to describe him is a "poor man's ROR." Maybe that's an optimistic floor for Pu. I want to get excited for the guy, and I'm definitely intrigued by all the things he does well on the ice, including scoring once he's found his groove (at London and Kingston), but I have serious doubts that he'll be able to maintain that level or even elevate his level the way ROR did when he entered training camp and basically forced the Avalanche to start him with the big club. Also, while I have my opinions, I'm not an everyday watcher of London or the Fronts, so there are better experts out there than me. I may have been lucky and caught him at his best (though I've seen him dozens of times, so that's unlikely), but what I've seen is a lot of all-around skills that, were they to translate to the NHL, would be very tantalizing. I don't project he'll be able to reach that ROR level, which is why I see him as a very solid 3C moving forward (unless you also see ROR as a very solid 3C, in which case...touche!).
Yet another long-winded reply to a 2-sentence post. Sorry!
TLDR: Pu good! Me wordy!
Edit: I mostly agree with flashsabre, who posted as I was typing (he cheated by only typing a few sentences, an ability I lack). That said, I think Pu is pretty close to deadly at the dot.