-
do some reading about probability and odds, and how astronomically improbable it is to get two Gjallarhorns on the same two characters, two weeks in a row. Or the others that open 4 legendary engrams and get the same gun 4 times in a row...
-
The chances of getting two Gjallarhorns in a week are the same as getting the Suros Regime and the Ice Breaker (in order) in a week. Based on the comments you've made, the only one around here that needs to read up on probability is you.