From the H-D catalog:
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Profile® Low Touring Front Lowering Kit
Place the rider's feet firmly on the ground. This kit utilizes components designed to provide a 1" decrease in ride height.
This product is available in multiple variations. Be sure to look for the one that fits the specific model and year of your motorcycle.
54564-09
Fits '09-later Touring models (except FLHR, FLHRC, FLHP, FLHPE, FLTRSE3, FLHXSE and Trike models). Must only be installed on vehicles equipped with Profile® Low Touring Shocks P/N 54635-09. Can be installed on FLHX and FLTRX models with Original Equipment rear shocks.
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This would tend to indicate that the FLHXSE already has the lowered front end, and the FLHX does not.
The FLHX has a 180/65 - 16 inch rear tire, and the FLHXSE has a 180/55 - 18 inch rear tire. If you multiply the tire width by the aspect ratio, you get a good approximation of the sidewall height. Add that to the radius of the wheel, and you come up with a difference in height due to the wheel and tire of 0.3 inches higher on the FLHXSE. Not as big a difference as one might first assume when looking at the 16 versus 18 wheel sizes. The spec sheets on the web site, which always must be taken with a grain of salt, indicate a ground clearance of 4.7" for the FLHX, and 5.1" for the FLHXSE, so my approximation seems to be pretty close.
Jerry