I have actually played and completed it, and I agree, it is really awesome. The surprise game of the year for me, after being burnt so many times by the Tomb Raider games (well everything that came after TR3/4 more or less), which is why I'm actually really looking forward to getting this and replaying it. That, and because there isn't a game like it on PS4 yet.
About the comparison; Yeah, I guess so, though I still think the PS4 version looking as good as it does and as close to a brilliant PC version is already a win in my book - as a console gamer. No doubt, if the PC got an update, I'm sure it would look even better. And I'm pretty sure, there's more to the "definitive edition" than just texture resolution, tesselation and some other things. Comparing screens might be great to distinguish which version has better textures and finer details, but the overall improvements might still be lost, like, as I mentioned, the more dynamic environment.
Maybe PC gamers that tend to play in front of a PC screen at a desk are more likely to compare texture resolution and other things because you are already getting a much higher pixel densitiy per inch relative to your viewing distance. On average, a console gamer probably tends to care less about these things, because we are likely to be sitting further away, on a couch in a livingroom, so some of the "fine details" PC gamers can obsess about are lost or less visible/striking. IMO - a dynamic environment is much more striking at distance, then losing a bit of texture resolution is. Now, I'm aware that there are PC gamers like Joker who have a great setup to play like us console gamers do, but he might be more the exception than the rule. If I had to make a trade-off for a console game, I think the Tomb Raider Definitive Edition pretty much got it perfect given the market they are selling to. On the PC perhaps different trade-offs would be made - due to the fact that many play closer to a screen and tend to notice finer details better.