In case this helps.

​From my RPi:

# ping www.google.com
PING www.google.com (172.217.1.36) 56(84) bytes of data.
64 bytes from ord37s07-in-f36.1e100.net (172.217.1.36): icmp_seq=1 ttl=56 time=51.5 ms
64 bytes from ord37s07-in-f36.1e100.net (172.217.1.36): icmp_seq=2 ttl=56 time=51.9 ms
64 bytes from ord37s07-in-f36.1e100.net (172.217.1.36): icmp_seq=3 ttl=56 time=71.4 ms
64 bytes from ord37s07-in-f36.1e100.net (172.217.1.36): icmp_seq=4 ttl=56 time=54.0 ms
64 bytes from ord37s07-in-f36.1e100.net (172.217.1.36): icmp_seq=5 ttl=56 time=53.0 ms
64 bytes from ord37s07-in-f36.1e100.net (172.217.1.36): icmp_seq=6 ttl=56 time=53.4 ms
64 bytes from ord37s07-in-f36.1e100.net (172.217.1.36): icmp_seq=7 ttl=56 time=50.0 ms
64 bytes from ord37s07-in-f36.1e100.net (172.217.1.36): icmp_seq=8 ttl=56 time=56.8 ms

--- www.google.com ping statistics ---
8 packets transmitted, 8 received, 0% packet loss, time 7008ms
rtt min/avg/max/mdev = 50.072/55.293/71.494/6.409 ms


From my i7 workstation:

$ ping www.google.com
PING www.google.com (216.58.216.100) 56(84) bytes of data.
64 bytes from ord30s22-in-f4.1e100.net (216.58.216.100): icmp_seq=1 ttl=56 time=62.0 ms
64 bytes from ord30s22-in-f4.1e100.net (216.58.216.100): icmp_seq=2 ttl=56 time=65.4 ms
64 bytes from ord30s22-in-f4.1e100.net (216.58.216.100): icmp_seq=3 ttl=56 time=62.4 ms
64 bytes from ord30s22-in-f4.1e100.net (216.58.216.100): icmp_seq=4 ttl=56 time=65.8 ms
64 bytes from ord30s22-in-f4.1e100.net (216.58.216.100): icmp_seq=5 ttl=56 time=62.0 ms
64 bytes from ord30s22-in-f4.1e100.net (216.58.216.100): icmp_seq=6 ttl=56 time=65.9 ms
64 bytes from ord30s22-in-f4.1e100.net (216.58.216.100): icmp_seq=7 ttl=56 time=63.3 ms
^C
--- www.google.com ping statistics ---
7 packets transmitted, 7 received, 0% packet loss, time 6008ms
rtt min/avg/max/mdev = 62.063/63.879/65.987/1.687 ms


My Rpi pings faster than my workstation.  Both wireless, same router, etc.

Caveat: I'm using a USB Wifi dongle on the RPi.