While I personally think that some of TWMXC says is all or partially correct, it would be nice if there were concrete data collected (or someone peak into the game code) to generate more then just a theory based on memories.
Sorry to those who have read this thread, haven't been doing much testing myself. My c/wl has been mostly been used for tosh farming and my gear is normally on my warden due to increase in instance runs. One day I will resume collecting data of 10k~ crit rate vs 1st boss beth data. Or perhaps I should wait in the case that difference in target/player level effects crit rate significantly.
twmxc is right. 1% more crit may not seem like a lot on your character window, but in boss burns i typically get 10% more output damage, by just having that one percent.
If my crit is 79%, and adding a few gets it to 80%, that doesn't mean im going to start hitting 1% extra crits. In reality, you do A LOT more critting. It's not a small meniale one percent.
I also don't think you'll find an actual statistic based on crit, specially since nowadays 80% unbuffed is a relatively easy number to pull off.
There were a bunch of aussies that came to our server once, claiming they stack patk ghost stats over crit. They geared up and ran with us, and were severely out dps'ed by us. We were all about the ghost crits.
You can take our words as endgamers who have days, weeks, months, of endgame running experience, or you can simply, not.