Sounds like a lot of caramel malt was used (how dark was it?) and the BU:GU ratio is a bit lower than normal for an American Barleywine (usually 0.8 - 1.0).
Primary: Humulus Congestus
Bottled: Downdraught Imperial Stout, Barrel-Aged Residence Time Barleywine, Sea Smoke Porter
On Deck: Chocolate Peanut Butter Stout, S'more Porter, Barrel-Aged Residence Time Barleywine