0ms is literally impossible there will always be some delay if its on LAN even if its minimal. However it is quesitonable that EWC has 30 ping for "LAN SERVERS"
yes Valorant is 100% played on LAN. EMEA was played online earlier this year but it was because of a server issue at the venue. Otherwise every single event is a LAN
winning ewc does not aid you in any way to making champs other than more reps on a stage so its basically streamed scrims with money so you dont full troll
it was happening all game. several times it lagged and the round still played out normally. unless you have only watched that one round there is no way you think that was game lag