Why Vegas Pro's keyframe curve and multi-timeline are still not complete?
Magix Video Pro X's keyframe Bezier graph: 
VEGAS Pro's freak keyframe curve: 
Magix Video Pro X's multi-timeline: 
VEGAS Pro's freak nested timeline: 
Vegas is much popularer than Video Pro X, but why these pro features are such trashier than Video Pro X?
It is unscientific.