Thread approved.
This might seem a bit too good to be true, but I tested it on 3 videos. I simply fed the tool 50 keywords and it told me if they were Super Easy, Easy, Medium or Hard...
The 3 videos I tested were rated as super easy, they ranked #1, #3 and #6 within minutes of them being uploaded. One even ranked #1 in Google search with no views/likes or anything.
Edit: people asking for volume. It was low, between 10 and 40 on each term but this took less than 10 mins to do... You could easily scale it