These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
In the deeper insight into post-Team Satisfaction, Jack is shown as something of a Jerkass With A Heart Of Gold. After Rally and the others appeared on the scene, he began to believe Yusei was suffering Motive Decay in regards to their plans to get to Neo-Domino, and using the offer from the city, went for the sake of having Yusei chase after him and fulfil their original plan of finding Kiryu.
The Woobie: Yusei seems to be getting shoehorned into as much bad luck as possible very quickly.
Stoic Woobie: Regardless of everything that's happened to him, he has stuck largely to his role as The Stoic.
Iron Woobie: After the duel with Kiryu, he's shaken by almost being killed by Ccapac Apu. But he doesn't mope about; he's bedridden, but he's more worried about his friends, specifically Jack, Rally and the Signers.