tested car with cooling system analyzer ---have question though

I tested my car today to see what the deal was with my overheating problem was... and the results were.... If the pressure gauge pulls vacuum that means u have a crack across the intake seat of the cylinder head.. Now my question is does this mean that the cylinder head is cracked or just head gasket?

And it says at the bottom of the page another way to tell if u have a cylinder head problem is steam out of the exhaust. and i have noticed that.
 
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