It's unique to her, but then again take a look at the girls recent genres:
Katy:
One of the Boys - Pop-rock, soft rock
Teenage Dream - Rock, disco, pop, electronic
Rihanna:
Loud - Dance-pop, R&B, pop
Talk That Talk - Dance-pop, pop
Gaga:
The Fame Monster - Dance, electropop
Born This Way - Dance-pop, synth pop, electro rock, techno
They all make vastly different music from eachother

Gaga is unique in her own right, but going as far as saying her music is revolutionary is quite a reach.