JinCA's been an ass to me, but to be fair, I don't think he's actually being a rabid or unreasonable nay-sayer.
He's said the Scorpio will be undeniably more powerful on every level over the Pro.
He's said that he's probably going to get a Scorpio.
Nothing he's said is unrealistically harsh or unfair.
Is he MAYBE downplaying Scorpio's advantages? Well, maybe, but not by all that much (if at all), because we really are getting to a world of diminishing returns. Dev/Art quality will provide a significantly bigger gap in real-world results than the raw power gap between PS4 Pro and Scorpio.
That said, anyone who's cared about/noticed the performance gulf between PS4 vanilla and Xbox One should care about/notice the difference between PS4 Pro and Scorpio at least as much, if not more (on high-end A/V rigs which would showcase the differences well).
For those of us whom haven't cared as much about such visual nuances (like myself) and who've felt like there isn't a meaningful gap between PS4 and Xbox One to begin with, well, Scorpio and Pro will still be very comparable in terms of the experiences they can deliver. The DF comparisons will be fun, and should always illustrate the clear advantages Scorpio will enjoy across the board, but at the end of the day - Battlefront II will be Battlefront II, and it'll look great on either machine... but it'll have a demonstrable edge on Scorpio.
How big that edge is, and how much people care about it? All subjective, and open to personal interpretation.
So I think JinCA's actually being responsibly metered in his excitement, and I don't think he's being unrealistically 'negative', or 'pro-Sony' TBH.