Yes, I think for the purposes of an average user, from what I hear I expect the 8K to outperform the Vive Pro.
Sweviver does not possess the Vive Pro, which you hoepfully noticed, so you cannot expect him to have compared it to exactly that device, but he knows the other ones, and from MRTV you may have heard that he mentioned in a live stream that when he put the Samung Odyssey back on the other day his spontaneous reaction was "OMG, this is really awful !".
Again, perhaps this will all not match up with your expectations, standards, etc., but Sweviver and MRTV did not say that they would give Pimax customized advice for every single backer. So it is still entirely possible that 80 % will be happy, and 20% not, or any other percentage, depending how far off the average Sweviver and MRTV happen to be in their level of expectation.
If the tracking on the final delivery units does not work within acceptable levels (and we all know that the Vive wands like to ride off into the sunset once in a while, the Rift tracking shows glitches too and Inside Out of the WMR is even worse, so please don't even waste any time thinking about demanding perfection), this is a show stopper. You could still use it as 3DoF, but then it's a different proposition.
If the 8K demands more than a GTX 1070 and somebody really whines on about it, I recommend they get a Wii console and an old TV so they do not have to face the cruel world of "if you want more performance, you need to get the tools for more performance". It's insane that somebody would join a KS campaign for a cutting edge next gen resolution HMD and at the same time think he will get away with accompanying hardware anything short of state of the art. If I get a race frame for a formula 1 car and plug in an old VW Golf motor, do I really expect it to compete with other F1 race cars ? Okay, so Pimax have hinted at their wonder-suspension called Brainwarp which may make your VW Golf motor fly, but did you really expect that to do the trick in all scenario's, without any downsides ?
Distortion around the edges - wow. So I get a piece of cloth, sacrifice 5° or 10° of FoV, problem solved. I hope I am not getting too technical here.
Build quality - if it breaks easily, or is vulnerable to sweat (oh, HTC have an excellent reputation on this point, don't they ? At least they won't change their warranty policy after contract-breaching refusal of repairs... ooops, they did exactly that), then it is a show stopper. But if the rather shady reddit reports really were genuine, the unit feels quite solid.
I think what many here are looking for is a VR headset to enjoy the games and experiences in VR even more thatn they can today, and accoridng to the firts impressions of the two testers it appears that this is realistical. But for people on a crusade to find flaws, I am sure the 8K will be a feast. So while you enjoy the feasting on flaws, I expect to enjoy a VR experience elevated to what I personally consider the next level. For me, for all the flaws it had, the V2 would already have provided that.