Earlene Roberts has Oswald zipping up a jacket as he went out the door. Nothing about "kind of" zipping up a jacket.
Which is far more than you have when arguing that Oswald was not wearing a jacket as he went out the door.
Total BS.
Roberts admitted that she wasn't paying much attention as she was concentrating on the television.
This means she had her back turned towards the living room where Oswald walked from his room to the front door.
Add to this that witness testimony is highly unreliable and that Roberts, according to Mrs Johnson, was known to make up stuff and what you are left with is nothing conclusive, whether you like it or not.
If officer Baker can mistake a shirt for a jacket than Roberts, who had poor eye sight, could just as easily have done the same.
So, no, it's not far more than arguing that Oswald was not wearing a jacket as he went out the door.