I played them side by side. The cabs they were in were the same. Just kept switching from one to the other.
The G12 K's sounded a bit flat, muddy in the bass. Messed about with the EQ for a while, just decided they weren't for me. The Hot 100's were similar but a lot 'alive', and the bass wasn't as low, and didn't sound muddy.
But.....
That's just my opinion, i'm sure others will love them