Some arguments are not clear. Organization seems haphazard. Logic of arguments is not made clear. Listeners are confused. Style Level of presentation is appropriate for the audience.
Presentation is a planned conversation, paced for audience understanding.
It is NOT a reading of a paper. Speaker is clearly comfortable in front of the group and can be heard by all. Level of presentation is generally appropriate. Pacing is sometimes too fast or slow. Aspects of presentation are too elementary or too sophisticated for audience.