How does the effect of Burn Shield and Bleed work?

Can someone explain to me how the Burn Shield’s burn and Bleed’s bloody work? Is the damage per second according to my INT (BS) and STR (Bleed)?

I buffed Burns Shield to an ally while we were leveling and the damage it did to the monsters that attacked it was less compared to mine. I thought the damage caused by this skill was relative to MY damage ONLY