This is why I hate visiting those sites for tablature most are tabbed wrong and pretty sloppy.
I checked out the ozzy section and 98% is totally incorrect. The only one that came even close was a blatant ripoff of Killer of giants tab that i have in 1 of my books...even that is not correct as Jake E. Lee plays it differently in the Ultimate ozzy video. Guitar for the practicing musician (before they became just Guitar) Has the only correct version of that song tabbed out. Also that same magazine has the correct version to lightning strikes tabbed out correctly as well.

While I'm on a roll......The Curt mitchel video instruction to crazy Train, Over The Mountain, and Flying high again...are very correct. So is the Tribute to Randy Rhoads by Cherry Lane (A great company)