He wrote that the colours appear more natural and representative of the original scene.
He's unequivocally wrong about that.
Christian Greuner - one of Phase One's staff and a regular contributor to the Phase One/Capture One forum - is on record on numerous occasions to confirm that Capture One's profiles are explicitly intended to be pleasing
rather than accurate.
I use Lr and Capture One, and agree entirely with this - and I tend to prefer
Capture One's colours myself, but it's not because they're more accurate.
Capture One renders microdetail better than Lr, but Lr's highlight recovery is better than Capture One's: they're both better than Optics Pro in this latter regard (by a country mile - this is true of their respective "shadows" tools too), but Optics Pro has its own qualities to recommend it, such as its lens correction tool and its NR (PRIME is peerless, although Capture One is the equal of Optics Pro's "standard" NR, which is high praise for Capture One).
One thing I like about Optics Pro is the ability explicitly to select Bicubic Sharper as the output resizing algorithm: this is usually enough on its own to produce a splendidly sharp image without any USM or lens correction sharpening applied - it seems to work better than resizing with Bicubic Sharper in Photoshop.
Back to Capture One, a little trick which has real value is to apply a small amount of the "Structure" slider in the Clarity Panel (with the method set to "Punch") - it adds a very worthwhile but subtle amount of extra sharpening that can't really be obtained with the standard USM.
Until recently I would have put Lr's NR above Capture One's, but with recent releases of both, I'd definitely give the nod to Capture One.
All told it's currently my go-to converter, but I tend to flip-flop between it and Photo Ninja, with Lr and Optics Pro played in as mood and necessity dictate; but if/when Picturecode ever gets its version 1.2.3b out of pre-release, with the bug fixes and highlight recovery improvements they've told me are in the offing, it'll probably go back to the top of the pile, because I really like the "just a converter" design model, and Photo Ninja does that one job phenomenally well - and cleverly, too boot, with much of its intelligence hidden from user view...