Ive read on this forum that the more downward the angle of attack the more in to out the swing path is, but i dont understand this, shouldn't it be the more downward the angle of attack the more OUT to In the path?
An out to in swing path is far steeper than an in to out swing path, if you swing in to out the angle of attack is shallower.
This is a great question.
I think the answer to your question is that those who make the suggestion above are assuming that the golfer's "Plane Line" is constant (i.e. straight), that ball position is constant, and that the plane line is pointed where the golfer intends it to be pointed.
If the plane line is straight, when a clubhead is ascending through impact, it is travelling slighly upward and inward back up the plane. Likewise, when the clubhead is still travelling downward, the clubhead is moving down and out towards low point.
You are correct, too, but I believe that your comment assumes a "Bent Plane Line" which creates an altered path and angle of attack.