No need to get snotty mate. And it's not for you soley to decide how your oppenent plays. It's to be discussed and if an impass happens.. roll on it.
But, its not a debate. No where in the rule of the spell or it's faq does it state to use the "profile" LD of the unit, just Leadership, ergo, inspiring pressence can be used in place of the unit's or the highest in the units including attatched characters.
I also fail to see the relevance of what some forum in poland says. sorry, ARe they GW? No? Then I go by RAW and GW FAQ's, Ammendments, and Erratas.
And If all else fails, I'll ask Johnny.