Maybe a multicomp with gate or even one of the new waves transient shapers 2 drop down the ride and bring up the vocal transients!
I know there a new miltizone comp coming out by elemental audio systems, it works more or less like a normal multiband compr, only it does not seperate de sound by freq. ranges but by level ranges, so if there is a resonable level diference between the 2 u can use diferent zones and increase/ decrease what maters!...
www.elementalaudio.com ... it's called Neodynium...
not sure if any of this will work!
Z