Rag

Always always? Because some people have 4 evasion, meaning that a 9 would go down to a five, constituting a miss.

I think is like the case similar to you rolling a 1 on BD. No matter how much your ACC is, it's still miss regardless.

^ Indeed, critical and 1  rolls cannot be modified. Having any extra at that point is a counter for an enemies accuracy or evasion.