Champions League tie breaking...

[Behamut]

So I thought I would end up first in my group stage, as the top 3 had equal points but I had superior goal difference.
But for some reason I ended up third. Can someone explain how this works.


I looked up tie breaking rules for top eleven but rule two still stated that a superior goal difference was the second criteria to look at.
I'm really confused as to why I'm not first as in the real Champions League I would have ended up first.