using the
suitgamer calculator you get the following results
Assuming you have $1000
Winning ration: Advantage / Equity: Value:
You: 12.44% -37.79% $-377.9
KS QS: 13.09% -34.55% $-345.48
JH TH: 13.32% -33.41% $-334.07
7H 6H: 16.48% -17.58% $-175.82
KD KC: 44.67% 30.83% $308.32
So regardless of the cards the KK wins on the pre-flop. This was with a Monte Carlo 100,000 simulations. Assuming you can have any possible cards. Also, the percentages differ when the 'suited' suits change, usually +/- 5% is a flush is possible for a player.