Incorrect. Hazmat is equivalent to Dread Guard (formerly Denova) and also drops off of HM Writhing Horror, HM TFB, NiM T&Z, NiM Kephess. Black Hole and Campaign are the same tier.
To be a little more specific about it, Hazmat is off-brand Dread Guard like Black Hole is off-brand Campaign. The only difference is the plates don't carry the set bonus.