Yup pretty old threads. I could refresh them if you'd like though
http://www.d20srd.org/srd/combat/spe...OrRebukeUndead
First thing to note is that on the table it's cleric level +/-#, not +/-# cleric level. This means it effects the result of the check, not the effective level of the cleric. Destroying undead says "If you have twice as many levels (or more) as the undead have Hit Dice, you destroy any that you would normally turn. " Levels, not check result. By changing the order of the modifier and the wording on your table you make the check effect destroying and commanding (which mostly just says as destroying but commanded instead). Is this intended?
To give an example a level 3 cleric who rolls a 20 cannot command a 2HD undead as regardless of the check result the cleric's effective turning level is not twice 2 (4), it's three.
Edit: in spellcasting should work so long as you link that section from each of the creation sections for the individual undeads effected.