it doesn't work that way, besides, pings can change drasticly in a short time.
And any time any 2 planes are interacting his ping does effect things.
Your connect to htc is good but how is it to him?
What you see on your FE will eventually impact him, but if he's got a poor connect it may take a while. Chances are he got halfway home then complained about the "invisible plane" that blew off both wingtips.