I'm sorry but you got it all wrong and don't understand what lagger is , its not about how high the ping is, it's more about the connection quality/stability. Now i don't want to sound racist but I have seen countless Turkish players with ping like 60-70 and they were extremely lagged with same stuff u described like getting very delayed rocket kill, or getting fucked out of the road in NTS/Race if i do only as much as touch them.
I have had way better experience with most South Americans with 250 ping than with Turks with 60 ping, and not only in MTA but in other multiplayer games i played turkish players were the biggest laggers with the shittiest and most unstable connection. Of course same goes to south americans, they can have low quality internet as well as turks can have better quality internet but it doesn't depend solely on their ping/server distance.
So your complaining about laggers as well as your sugestion about reducing the allowed ping limit is completely pointless and it wouldn't fix the issue with turkish players lagging with low ping.