If a spy is using the dead ringer, steal all the metal around you as fast as you can. They have 90% damage reduction while cloaked, so you're not going to kill them for about six seconds (even with crits or backstabs or them getting hit by a train - I've tried them all.) This is the key component in understanding why people say this watch is OP. It isn't, but it has very high survivability unlike other methods (i.e. disguises and/or "regular" cloaks, which grant little or no damage reduction.)
They also require a second or two to decloak (though this has a high chance to lag,) so if they push past you via a DR feigned death, they're gonna kill you, somebody else, or sap - and you may not hear them decloak due to a high noise floor. Just knowing they're around already puts them at a disadvantage.
They also require a second or two to decloak (though this has a high chance to lag,) so if they push past you via a DR feigned death, they're gonna kill you, somebody else, or sap - and you may not hear them decloak due to a high noise floor. Just knowing they're around already puts them at a disadvantage.