Yes. https://www.retevia.net/fast/

The throughput issue may be because the IPv6 network is less utilized and or uses more efficient routing, but the latency is less.

Here's Facebook's information on how IPv6 is faster: https://engineering.fb.com/networking-traffic/ipv6-it-s-time...

> We’ve observed that accessing Facebook can be 10-15 percent faster over IPv6.

the wording "can be faster" tells that this is the upper bound. ie. it is generally about the same, while it can be 15% faster or slower than the ip4 average. sample sizes are most likely somewhat different aswell .