I would just add that I don’t think the point is that people who find it easier to learn are more likely to go to Gan Eden than people who have ADHD and CAN’T sit.
The nimshal is conceptual, not necessarily literal. And the point (as I see it) is that the more steeped in Ruchnius one is and the more one DESIRES to be able to sit and learn and is looking for the day when he will go to Gan Eden and rid himself of his physical limitations (including his ADHD), so that he is able to sit and learn, to that extent he will earn Gan Eden.
I am just writing that to clear up possible misconceptions that any readers might have, and not because I thought you thought otherwise, Iacisrmma.