Lens correction crop / full format

Hi,
Does the lens correction consider the crop factor of the camera?
I mean the vignetting correction should be softener on a 1,6 crop/40d as on a fullformat/5d
For my sigma 10-20, the only profile is canon@sigma 10-20, but no clue for which body.
wbr

There are two very different and contradictory ideas being said here that are both arguing against rocket's (and now my) premise that there is an oversight here.
One theory is that as long as the profile was made on a full frame camera, it does not matter what camera you apply it on.  The same profile will work on any and all cameras and LR does not need to know what the model of camera it was because the full vs cropped is irrelevant.  This is what I am taking from what Jeff has said.
Lee's theory is apparently that LR uses a profile made on a full frame camera and applies it differently depending on if it is full frame or not.  This happens to be the way that I would think that it would need to work, but I am not a physicist.
Jeff, and Lee, are these correct assumptions of what you are each saying?
If so then
If Jeff is correct, then there is no issue, no oversight.  If Lee is correct and the camera's crop factor is indeed required to interpret the profile, then it obviously does matter what the crop factor is and it is an oversight not to include it in the custom settings.

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    From: Jeff Schewe <[email protected]>
    Reply-To: <[email protected]>
    Date: Sun, 16 May 2010 23:57:46 -0600
    To: Mike Curl <[email protected]>
    Subject: Lens Correction filter not working?

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    From: Jeff Schewe <[email protected]>
    Reply-To: <[email protected]>
    Date: Sun, 16 May 2010 23:57:46 -0600
    To: Mike Curl <[email protected]>
    Subject: Lens Correction filter not working?

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