I pulled up the Impact label.  Dual is listed as an appropriate tank mix partner.  Bicep II Magnum and Bicep Lite II Magnum are both listed as appropriate tank mix partners. 

Brawl II ATZ is basically identical to Bicep II Magnum.  My response to your question is.... labels generally list brand name products.  They don't list all the generic versions.  You should be good-to-go with using Brawl II ATZ + Impact.