so i've found it doesn't make a difference whether your guess/call bluff is correct or not, it just randomly decides if you lose or win the round. called bluff on there being at least 3 4's (there was 1 four) and it lost me the round regardless. next round i guessed at least 4 6s (there was none) and i won the round
Please note that for Bluff, according to the rules the 1 is wild, so it can represent any face value!
the 1 is a wild card only for face value, not amount of dice. it happened to me again earlier on a bluff of at least 2 3s when there wasn't any
If you had a situation where there were at least 2 dice that had a 1 on each of them, then that would count as 2 3s for that round since 1 can be anything. To go back to your original example, if there was 1 die with a 4 on it, and 2 other dice that had a 1 on each of them, that would count as 3 4s when counting everything up.