Well no I would not need to watch just one game. Need a larger sample size than that. And if he really is that lights out as you claim after seeing him in a couple of games, the question remains why are the Jags eager to ship him away? Maybe it is just a factor of the regime change in Jax, maybe not.
As for Jackson, I really don’t have any high expectations of him as a very late draft pick. And even if I did, well, see above on sample size. He hasn’t played nearly enough for me to make a judgment about his meeting any expectations.
but your grand football mind seems capable of making snap judgments on players whilst watching from your couch, so you tell us.