are from five cards dealt to your hand alone. You will be dealt
a pat straight more often than a flush.
There are 5,108 ways to make a flush and 10,200 ways to make a straight out of 2,598,960 possible hands (A straight uses a combination of 20 cards, while a flush uses combination of only 13).
The hand rankings are not
concerned with how easy the draw is to hit (9 outs for flush, but only 8 outs for straight) AFTER you flop it. So yes, flushes will hit more often than straights, but you don't flop the draw as often in the first place.