On RS2 like on other TW games the Ping value is generated using the ping to the server and then back.

Where on most games, Tripwire games dont show you your true ping as they only use "one way".

If on RS2 your ping looks high to you cut that number in half and that's what a majority games show as your ping.

70 ping is fantastic
<100 is great
100-150 is playable
150-200 is pretty sketchy
200+ is unplayable