Strike isn't as important to grading as luster, contact marks, and eye appeal with grading ANY coin. More detail is lost as a die wears out, right? Well, luster also increases as a die wears down, so a lot of coins that have lots of luster often may not have the best strike details.
That's why absolutely hammered coins that have great luster are so desirable. It's an uncommon pairing in the process of coin production.