Because nothing could touch him, remember the fight with Vin? he didn't even need to try and he was untouchable, if it wasn't for plot armor and Deus Ex Machina Vin would have died.
Roshar is already able to mass produce it, several years before AoL
Plate shatters at roughly two hit from a blade, using plate doesn't seem to matter.
Considering Stormform can jump twenty plus feet I don't think it's unreasonable to say tey have greatly enhanced strength.
Infinate speed is of course impossible, but high hundreds or even low thousands are not off the table.
Roshar is more than familiar with groups or even armies with no supply lines,
And we already have a use for every surge.
and F-Cadmium is forced, the slightly less noise you would make by breathing is far too small to be a massive benefit,
Roshar will make it out almost unscathed, simpy because Brandon isn't willing to sacrafice the world, and arc 2 is only like fifteen years later.
Actually it is, that's the part where Suit is taking off in the same ship that they use to go to Elendel and the southerners take to go home.
Increadibly exspencive explosives.
Conjecture
I find no evidence that Preservation and Ruin were each others anti-tone I would be more than happy if you could provide it as it would make my life a ot easier, but the closest we have is that they repel each other, wich was not an inherient thing but something that developed due to them being close together.