It means something, but it's hard to quantitate. The number of leaves depends on a bucketload of factors--type of paph, quality of the roots and plant health in general, how stressed the plant is after the previous blooming, probably moon phase too.
I'd estimate in general maybe 4-6 leaves, not counting the first couple baby ones. After 3-4 full size leaves, that plant oughta be thinking about blooming. But I've had paphs/phrags that skipped blooming on a mature growth and put up a new growth...this new growth grew rapidly and bloomed after just a few leaves. I've also seen particularly vigorous paphs that bloom, start a new growth, and bloom while that growth is only half mature and much smaller than usual.