Knighton and Tobogo are basically the same speed, but Knighton is younger by 7 months. So if Tobogo is a threat then Knighton is at least the same threat. We'll see how Knighton does this year once he opens up outdoors.
Tobogo's 2nd best 200m last year was 19.81, Knighton's 2nd best last year was 19.75 with a slight headwind. Knighton never had a good tailwind race last year to put up a super fast time like he did when he ran 19.49 two seasons ago, but his consistency in the 19.7/19.8 range with no wind at age 19 makes me thing Knighton could reasonably pop off another 19.4 this year on the right day, maybe even 19.3 if he has gotten a bit faster.
And Knighton BEAT Tobogo at world championships last year in the 200m, so what data point are you looking at to make you think Tobogo is somehow better now? Ya maybe Tobogo could beat Knighton in the 100m, but not the 200m. And I don't think Tobogo is going to beat Coleman or Lyles this year in the 100m.