And how do you know if you did the analysis correctly without data to test it? How do you know if you copied someone else correctly, or if the person you're copying from even knows what they're talking about without data to test it?
Oh, wait. Sounds like you need a parser to have visibility into what's working and what isn't, which is exactly what I said in the first place.
You think those world firsts and people coming up with the rotations and stat priorities everyone is copying did it without any parsers?