Divergent Likeness Skill

The description of Salvador’s Divergent Likeness skill is not very clear. The description says " … When Gunzerking with two guns of the same type …" Does this mean 2 x pistols of the same make & model (eg DPUH) or 2 x any Torgue pistols or just 2 x pistols of any make? Obviously a Pistol and SMG would not count for bonus damage. Can someone clarify this for me? Thanks

Same type means Pistols, Shotguns, etc.