These are fighting words I'm aware, but anyone talking about Kylington over Valimaki are out to lunch. I can see the high potential argument for Kylington, but the bust factor is exponentially higher than Valimaki.
It's all subjective. Some will value upside a lot more than how safe a prospect is. Putting Kylington ahead of Valimaki because you see a higher ceiling doesn't make you wrong. There is no criteria for how we rank these prospects.
Example: Hathaway is likely a very safe bet to be a gritty 4th line guy. That doesn't mean he should be high on the list.