First and foremost a CCW is looked at by a Law Enforcement agency, a CL or even the background check for a nuc plant is done by the government. Plus a CCW is a card in your wallet that is understood to have been issued after such a check by a dept. A CL doesn't guarantee that ANY background check has been done. It may be done in some areas but not necessarily at a national level.
A secerty clearance isn't tatooed on your forehead and you don't have a card that says what clearance you have, unless you have a badge for a facilty, and they don't have that on it except for maybe a colored band that only employees of that facility would know what it means.
A CCW isn't always a "free pass" and doesn't mean you still won't be arrested or given a ticket. Do all LEOs give "passes" for some things sure, do they also have a duty to do a job and do it safely and fairly DEFINATELY.
depends on the state, in CA. ( assuming your in a county that gives them out) its actualy harder to get a Cl then it is to get a CCW... exact same back ground check, Done by the same people, on the same machine. Back ground checks by law CAN only be done by the CA DOJ.( the LEA must use thier data base and only thier data base) After you pass that all you need s a 8-16 hour class( min and max by law, changes per county... I know it ticks me off as well) Where as to get a CL, you need pass life scan( which btw is also what checks when you work with children), have 4 years exp in your trade/ school degree in construction of some type, and post a bond. Once you have it, you are issued a card, that by law you must keep with you at all times, rather your working or not. So why should not my CID card be just as good as a CCW?
While we are there, what about my ID from the CIF or SJUSD id cards? both of those require the same back ground check.
Now I'm not saying all contractors are angels, there is alot of scum out there, but not all CCW have a halo above thier head. ( more so in CA where is some countys CCW are bought, not issued.)