You know what I had a hard time believing at first?
I never did quite believe straight could match a shavette or Slantbar in terms of sharpness. I suspected maybe these guys were "straight razor superfans" and were overstating how nice the shaves they got were. I was scraping myself up good. Maybe some here are in that boat, but they would never come out and say it. :)
I got mine shaveable and all, and enjoyed it, but when I loaded a single-side blade into my Dovo shavette, the blades not only cut easier but were literally too sharp.
Even after getting BBS shaves with my straights, there was always a little more effort to get those results. (3 passes and a touchup for total smoothness at every angle).
I occasionally shave with a shavette to gauge my progress with real straights, or when I'm really in a rush, and I was pleased to find it was not only no better than my recent straight shaves, but around my chin area it was even pulling more than my own honed and stropped straights. (My chin challenges even a feather blade).
I ended up doing a second pass with the Cmon I'd just gotten, happy to be inconvenienced.
So a good finish off a high grit stone like the Norton 8k will really get you a nice shave. Taking it a step further with the finishing stones and pastes will obviously force you to BELIEVE THE HYPE. You'll probably get there, it's just in comparison to how easy modern shaving got, straight shaving and maintenance is a trained skill normally applied to a profession and not as simple as learning to take a plastic handle and drag it over your face while the multi-blades and pivoting head take the skill and reward out of it.
As for which is truly sharper, maybe a feather still has the edge (consider no pun please), though I know I'm easily getting the blade as sharp as the average machine-honed blade I put into my DE or shavette. The real difference is it's smooth, and unlike machine blades, I NEVER ever bleed after the shave any more. The straights really are king.