First of all deathevading is worse than wallglitching, fact.
Second, when phenomz killed you an admin was present in the game and was able to take action right on the spot (for reference, Ferrari could have easely tried to ban me here which he didn't
http://ec.vcmp.co.uk/index.php?topic=702.0).
That he decided not to ban phenomz is fully up to said admin as
admin discretion comes into play.
Fourth, killermaster was trying to kill from
bugged places which is worse than killing someone who is playing on a legitimate manner in my opinion. Also there was no admin there to take any action at that time hence why the report was moved to the forum.
Fifth, killermaster already has previous ban records so that's probably what influenced on why he is now banned as well.
@Meth, I believe it was Dave who warned him.