I agree that just using the average FPS to judge GPUs is a flawed approach, however I would strongly opine against the value of using minimum FPS values. Minimum FPS is a largely useless metric given that the majority of the time it is just an outlier, and these days no one should really be using them when it is so easy to use metrics like 99th percentile or 95th percentile values instead.
Regarding a meta review site, I've personally always been partial to 3Dcenter who collates a large number of launch review with any new GPU and calculates the average performance.
Here's their RX 460 analysis.