Also remember the hp rating of the 6.2 in the F150 is rated on 91 octane while the 6.2 in the SD is rated on 87. 87 in the F150 6.2 drops it to 401 while 91 in the SD 6.2 brings it up to probably close to 395...

You will see an increase in hp just running a higher octane on the 6.2. Jettix2 is correct, the SD and F150 do have different cams.