Equity Question

[Cloodie]

I'm trying to incorporate range and equity calculations into my game but I've got a question about a fairly basic calculation I was trying to work out in my head.

If you call a raise preflop with KK (forget about 3 betting for now) and you know the original raiser is only playing the top 3% of hands (JJ+, AK) and the flop is..

A 9 4 rainbow

When trying to work out a quick calculation in my head I cam up with the following - You are ahead of JJ and QQ and as there are 6 possible ways to be dealt each of these hands you are ahead of 12 of his possible holdings. However, you are behind AK and AA of which there are 22 combinations. Therefore, you are ahead of 12 hands and behind to 22 so you're almost a 2-1 dog.

I ran the calculation in pokerstove to see if I was correct and it has me with 53.4% equity. Where have I gone wrong in my calculation?