Okay. I you might think I'm biased (Hence the name), but I'm actually not (I think), Dalinar in my favourite character from The Stormlight Archive. Anyways, It's pretty tough. Here's a brief comparison.
•High endurance and stamina (what's up with all the points starting in 'H' anyway?)
•He is the BLACKTHORN people, I mean he United Alekthar with SHEER BRUTE FORCE.
•Crazy good with Iron and Steel
•Okay with Brass and Zinc
•High speed and agility
•Proficient at Pewter dragging and daggers
•Pretty smart(That rebellion plot was AMAZING!)
•Killed an Inquisitor the 'hard way' on an open field (or city square, same thing) where he's at a disadvantage
•He can sort of fly (ish)
Dalinar wins in close combat, as Shardblade is OHKO
In the Shattered Plains, Kell has the advantage because of the terrain
Duralumin + Pewter/Zinc/Brass = OP
Dalinar has superb endurance
Coins shot repeatedly will break the shardplate
Broken shardplate is BAD as it weighs you down (like at the tower)
Shardblade is flippingWEIGHTLESS and SIX FEET LONG I mean come on. Really? Op much?
On the Shattered plains, I think Kelsier would win because he can easily use the chasms to his advantage and pepper Dalinar with coins (or his plate). And duralumin… Also, if Kell can control a Chasmfiend to attack Dalinar, GG.
But this is just my opinion. Contradictions welcome! Plus Dalinar would definitely win if they fought in the City Square.