Unless Fuji, the manufacturer of the X100, publishes such a specification I doubt there is any reliable way to estimate the expected shutter life of the leaf shutter on the X100 unless you are willing to buy a large sample of X100 cameras and do the testing yourself. I am aware of no independent review/testing organization that publicly publishes results from such tests.

Keep in mind that the Shutter Durability Rating published by Canon, or the equivalent published by other manufacturers, is not an absolute number. There will be shutters that last significantly less than the rating for a particular camera and there will be shutters that last significantly longer. The number is most useful when comparing the expected life of the shutter assemblies in two different camera models from the same manufacturer, but not necessarily as useful when comparing models from different manufacturers. The methods used to arrive at such numbers may vary greatly from one camera maker to the next.