Thunder you're doing it again. There is no point in purely viewing the strength of suited connectors pre-flop because this value changes HUGELY post-flop, i.e. 78s on a 9QAr board and 78s on a 69A board giving you a flush and straight draw. Pre-flop strength only matters when you're all in, and in all but the mid-late stages of tournaments this isn't usually the case.

The flush question - what we're saying is that although the flop is two suited 60% of the time, it will be YOUR suit a little less than 1/4 of 60% of the time - there are 4 suits, ergo the quarter of the time your suit is the one that hits a flush draw. This works out at approx 12%, or 1 time in 8. That's all you need to know.