I stumbled across the “Carth (L), Ordo, Juhani” team which crushed the above mentioned BH team on auto...
... the opponent was all g12 with all the zetas and bells and whistles...
Despite being far less starred and geared they ground them down pretty efficiently...
Won on full auto convincingly after I had attacked their team repeatedly and had pretty much given up hope of beating them...
So I put them on defense next round and they won 6 battles! Not too shabby!!
(this is using them at only 3 or 4 stars.... and vs 4.3 mil GP opponents)
Maybe they just caught people off guard since most don’t have any real experience fighting them...
Anyways... That’s what worked for me this last GA... more testing awaits :)