truck fender flare

Difference in fender flares?
What is the difference between cut fender flares and fender flares pocket for a truck Ford? Apart from the obvious fact of having to cut the truck? Is it a bigger and bolder? If someone could direct me to a website with the difference photos would be welcome!
Cut have to cut the fender and do not give as the removal of wheels, obviously, much more, in appearance and size the two are almost identical to the cuts to be minimally important for some trucks (some are exactly the same size). To see them go to page Bushwackers http://www.bushwacker.com/ website here.
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