Just tried the modern Swede in my Rockwell 6S (plate 5) and the sharpness does seem a bit higher than the 3/5 I gave it before, I'd say it's comparable to the regular Gillette Platinum. Awesome blades!
After a couple more shaves with these blades I have to conclude that they are just not sharp enough for me. It's a very safe and smooth blade but the end result is just not close enough..