e.g., how do I compare a 5 min AMRAP ("as many _ as possible") of something which I can't lift at RX to a later attempt where I might lift more (but slower), or less (but without stopping)?
Similarly, how do I meaningfully compare the performance of the same lift (e.g. deadlift) in an AMRAP situation with doing a set amount in as long as it takes? (I'm slow.)
I don't mean to imply that Crossfit is less than awesome. It makes me feel amazing, and I love it. I just have had a really hard time _quantifying_ my performance.