But I still think we are in a superior position since we were able to keep a clean sheet at home. This means that for every goal we score they have to score two to go through
The statement is not quite correct. They don't have have to score 2 goals for every goal Liverpool score,
all they need is to win the match regardless of the scoreline and number of goals scored by Liverpool, or avoid a scoring draw to force extra time and penalty(If there's still no winner after extra time).
Which implies scoring at least one more goal than Liverpool scored (unless Liverpool doesn't score at all and Bayern Munich is able to win the match 1-0). Because if they draw 1-1 at the Allianz arena there will be no extra time nor penalties because Liverpool will win, on aggregate 1-1 based on the away goals (just like Machester United did last week). All you did is confirming my original statement since it seems to me that you are not familiar with the away goal rule.