A tool is a presentation tool when it allows you only to show your slides to others while you talk. The people listening to you have very little ability to respond and inform the conversation or even add materials or interaction to it. Heaven forbid they can ask each other questions while you talk!
A tool is a collaboration tool when it is allows all of the people using it to constructively add to the dialog and interact in a number of ways, including without the direction of the leader.
A good test between the two modalities is this: Can you use the tool WITHOUT ever using slides? If so, it is probably a collaboration tool.
If all you want me to do is listen to you and watch your slides, please send me a Slideshare link or even a PPT with embedded audio. You’ll save money and I’ll save time.