Kintoki has nothing for Gae Bolg.

Berserker Kintoki is implied to be weaker than his actual proper class, which is Rider. Although he is a folklore hero, his proper NP as a Rider is one of the Minamoto clan’s most sacred and strongest treasures - Settsu Armor Kumano. Which is far superior to Gae Bolg in terms of scale and ability, but lacks any proper feats w/o assistance, he has nothing to counter Gae Bolg as of now. 

Anyway yeah how tf do i undo that box thingy above.

Cu pulls out Gae Bolg extremely quickly and for very little reason. Which makes sense, it's a surefire way to just, end a fight. Yeah I'd say Kintoki is a better fighter, being one of the Four Heavenly Kings, but Death Spear is Death Spear, and if you don't have a counter, you just die