There is a great post by Avs71 (or Avs19 I forgot which one
) you should look for it basically shows that Jones plays a way tougher position. He basically said that Jones can't go out and create offense by himself he has to wait for the puck to come to him both offensively and defensively. He has to wait for the pass when shooting, he has to wait for the puck to come to him for a breakout and everything in between while MacKinnon goes out gets the puck and creates everything by himself. It shows that defensemen is a way harder position and the numbers Jones has put up for defensemen in those "waiting games" shows he is one hell of a player. It also shows that he creates offense as a defensemen which is really hard to do and shows his talent in skating, hands, and vision. I also think Jones passing is by far one of the best I have seen and his passing as a defensemen is much better than Mackinnon's passing as a forward.
I credit MacKinnon for taking advantage of the scenarios he was put in. Even though the Ivan Hlinka tournament is complete crap to me he got a hat trick in the finals and got a hattrick in the final game of the Memorial Cup too boot. But I do see some biased in your post (MacKinnon pumpin', downgrading Jones) because MacKinnon was complete crap in the WJC, which means the most out the ones we listed. I know the MacKinnon faction will blame the Coach Spott for that, but it still brings me to the next point that Nathan and Drouin were both on the same level and Jonathan completely outplayed MacKinnon. I also disagree in the saying tnhat Jones wasn't great, he was slow at the start of the tourney true, but he progressively got better as it went along and he played freakin fantastic against Canada and solid against Sweden.
Then in the Memorial Cup Jones looked tired and passive, definitely looked anything and every besides solid. But he still came away with 4 points in 5 games and +6 with Carruth in net as well. When Winterhawks needed a huge goal you can say that both of Jones goals were huge in the individual games. Carruth crapped the bed, the hallway, and the toilet in their first meeting which Portland would've won if he wasn't in net and Seth's second goal was huge in the comeback that ultimately fell short. Saying MacKinnon has better game breaking talent over Jones is a joke to me, I think both of them and even Drouin have it IMO.