I know Dylan is becoming a "Ninja," but this is no Hobo drinking alcohol that Dylan could take on with 3 days of MMA training. Logan's physique is more about muscle and appears to be in great shape physically. I would think Dylan would have to outwit Logan instead of fighting him, like maybe slashing his car tires. Aiden, IMO, would be a much more believable person to fight and win. A couple of things come to mind about your thought here.
- Either Dylan tries to pick a fight, maybe to defend Ellie from something, and loses. This will show Ellie that her brother would defend her no matter the cost.
- Or if there is a confrontation and Dylan is on the winning side, He must have used The Hyperbolic Time Chamber for training (DBZ reference) since we are way out of the realm of realism now.
I think the training is more in line with Marie's story, as she likes MMA stuff, and it may lead to a sparring match between Dylan and Marie to find common ground to advance their relationship. However, even the walkthrough shows Dylan's training is for the side story, in which Dylan and Ellie's story started as a side story, but the next P.D. will be a choice between Sophia and Ellie. This tells me that Dylan/Ellie's story will replace Sophia/Dylan's if the reader chooses this path.