All of these games (except Quake Live) use lag compensation and Minimum did not. Also, all of these games are frequently bashed for lousy hit detection as lag compensation can't be perfect. The reason developers use serverside hitreg is not hackers (after all, you can hack even slow projectiles), but legitimate players with lousy internet connections. Without lag compensation, whatever they hit on their screen has to count as a fair hit on the server, so you can be dodging all you like, but on that player's screen you'd be standing still if it happens to be during packet loss. One player like that can ruin the experience for the whole server, but I say it wouldn't be such a big deal in Minimum, were it to happen at all. Also, the chance of it happening is much smaller in 2014 than 10 years ago, when HL2 was released, as decent internet becomes more accessible.