there are so many levels on which this post is wrong
Height doesn’t mean shit in terms of playing ability when it comes to elite players. How tall is Crosby again? The kid is elite offensively as well as defensively - his advanced metrics are out of this world good. Nurse put up 41 points once and will fall short of the mark this year- he isn’t a perennial 40 point player. So far that is his peak season at age 25, 5 years into his playing career. He’s a nice defenceman, don’t get me wrong but Quinn Hughes literally single handedly makes plays and a lot of his assists have been setting up players for tap-ins (a lot of which have been missed). Draisaitl is NOT a two-way beast, btw. I don’t care how good Drai is (which he is a beast, no denying it), I’m not giving up Hughes because there is real potential for Karlsson 2.0 and I would never ever trade Karlsson for a Draisaitl type of player, especially if I have this Karlsson for the rest of his career.
Then we can absolutely agree to disagree here. So that you can understand that I "get" what Hughes is, I completely agree with the Karlsson comparison. And I would trade Karlsson to get Draisaitl 10 time out of 10 times and walk away giddy. I don't think you would find a professional GM that would disagree with that even with age and contracts aside.
I'm a 5'9 goalie and I have mad, mad respect for smaller guys that can compete. But you give me a 5'10 (Hughes-sized) Karlsson and I'm choosing the 6'2 220 defender with 80% of the same skills every single time... I want to see the puck. If that means an increased rate of "glass and out" ... fine by me, it still gives us a reasonable chance at a line change or at the very least a reset of defensive coverage.
Would I trade Nurse for Hughes? In a heartbeat, if I needed a puck-moving offensive D, but the delta is just nowhere near the delta between Horvat and Draisaitl...
Finally, not for nothing, but:
1) Crosby's not a dman so completely irrelevant to this conversation... and size for D still matters, even in the modern NHL
2) Your arguments against Nurse are a bit disingenuous. He was 23 turning 24 last year when he put up 41 points, you know that is far from a Dman's typical peak. Second he's 3.5 points off a 41 point pace for this year and just turned 25 a month ago... so I would pump the breaks on the implication that it was a 'peak' he's unlikely to repeat in the future. You have zero basis for that.