The benchmarks seem to show YARP doing around 35% more requests per second, having around 25% less mean latency, 20% less 90th-percentile latency, and 10% less

The benchmarks seem to show YARP doing around 35% more requests per second, having around 25% less mean latency, 20% less 90th-percentile latency, and 10% less 99th-percentile latency for http-http. Moving to https-https, it's around 10% more RPS, 10% less mean latency, 15% less 90th-percentile latency, while Envoy has 10% better 99th-percentile latency. I'm not sure where you're seeing 2x, but it might be the scale of one of the charts you're looking at being deceiving or I'm not looking at the same test you're looking at.