I just checked mine. I get about the same.
Pinging 8.8.8.8 with 32 bytes of data: Reply from 8.8.8.8: bytes=32 time=12ms TTL=115
Pinging 8.8.8.8 with 32 bytes of data: Reply from 8.8.8.8: bytes=32 time=12ms TTL=115
Reply from 1.1.1.1: bytes=32 time<1ms TTL=60
Some sort of local caching going on.
Even my ISP's next hop is 2.5ms, 8.8.8.8 and 1.1.1.1 are both at 4.7ms.