Cool replay! I don't get why your opponent conceded though.
So you don't think this is on the same tier as Powerful Guide? That surprises me. In what ways do you think it's weaker than that? Let's see if we can't eliminate those weaknesses!
He conceded because next site would have been
Cavern Entrance and Shelob would have taken out a 3rd companion from skirmishes (Treebeard and
Grimbeorn were already out) and I'd have easily had another 6-8 minions out next site, and if he doesn't triple I just simply walk in. Based on his
Moving this Way usage, his freeps were most likely out of gas at that point too, and the nazguls couldn't even scratch my guys.
The deck doesn't have a specific weakness imo, it's just simply not as efficient at killing stuff as Madril and
Powerful Guide are, and also not as good at controlling the sitepath because of the lack of Sméagol. I'm using way more cards to kill minions than the afformentioned 2, and also I devote a fair share of resources to maintain
BoO, which leaves less space for control and tricks.