Again, just because it is possible it doesn’t mean that Marin is a board clear. Just like you would not say that Hematurge or Lighting Reflexes is a board clear tho you’d have better argument with those because they have better chances of getting one.
I admit I was a bit dissmissive, yes, Warrior has decent board clear/removal potential (not as good as DK but still). That was almost always the case and reason when Control Warrior was a thing (yes, we remember the Dark Ages). However they are just stalling mechanism to get to what makes Reno Warrior strong: Brann and Excavate/Boomboss/Marin shenanigans. Hunter is favoured into Reno Warrior, so is Plague DK and Shopper DH so aggressive decks are fine. Reno Warrior is best against slower decks and wins thanks to the power of doubled broken battlecries (Boom, Boomboss, Marin and Fizzle).