Like others have said, I think "performance" is partly about measurable data like chronograph results and partly about less easily measured characteristics like noise and vibration.
I have recurves from Dale Dye, Schafer, Wes Wallace, Blacktail, Robertson, and John McCullough (59'er). All of them are in the same league for overall performance but I definitely like a couple better than others.
I would love to have a chronograph someday, more for reloading but it would be fun with the recurves too. I doubt it would change my mind as far as favorites though.
I have to say that overall my Blacktails are my favorite. I don't know if a chronograph would show them as my fastest bows, but they
seem a little faster than my other bows with similar arrows, not that it really matters. They might just seem faster because they have less vibration after the shot. How each bow ranks in speed is less important to me than the overall shooting experience.
In other words
all of my bows are fast enough...