Can anybody explain to me that ping thing? How high is really playable? Which players pings difference on one server can affect results? I mean I have for example ping about 60 and other player has 400. Do I have real advance?

Time taken for info packages to reach server and for server's packages to reach your pc
Higher ping seems to be more advantageous tbh :/

Lower ping number is better? Do I understand it good?

Lower ping number is better? Do I understand it good?

I'd like to say yes, but for me it's only really noticeable when everybody has a low ping

The high ping people tend to affect gameplay adversely

In layman terms the lower your ping the faster data is sent and recieved from one server to the next.
So you would think having a low ping over a high ping would be better...usally this is the case and does.
But here is the kicker....in Crysis3 MP if you have a low ping and the biggest part of the lobby has high pings they will 90% of the time have the upper hand to the players with the lower pings.
Lag Compansation will not win the day......but lag will.....