Unfortunately, this is too often the case in business presentations: Even if a presentation makes no sense, as long as it sounds serious and jargon-y, it's assumed you're saying something important.
Read these previous posts for some tips on giving clear, concise and jargon-free presentations:
The curse is back!
Are you speaking your audience's language?
Your #1 goal: Say what you mean
Do you know your audience?
Lose the jargon