The way I see how the match is going to play at, I think Chelsea will likely win at Dortmund home while Dortmund will try to get a draw at least but that won't be possible. Chelsea has the highest chance of winning at the Stanford bridge because they are going to be playing in front of their fans and they won't want to disappoint them. People thinking Chelsea is going to be terrible has to realized that this isn't the premier League, this is the Champions League so things might likely play at differently.
The bookmarkers don't always get their prediction right and don't forget that something they might be doing this kind of rating on purpose to attract betters. They on purpose give out bad rating to the favorite team, for instance, the game between Liverpool and Real Madrid is having Liverpool as the favorite when we all know, Real Madrid are by far superior.
I have to agree with the assumption that the Champions League has different interests than every team there is. Chelsea are indeed in a disadvantageous condition in the Premier League, but it looks like they are not allowing conditions to be as bad in the Champions League against Dortmund.
The chance will be equal for both teams, but Chelsea are the favorites over Dortmund in the Champions League. If Haaland was still in Dortmund, then I think Dortmund would be the favourites. I like Chelsea to reach the quarter-finals, but Dortmund for whatever reason will definitely try to give their best to win it. I just don't want to say Chelsea are better, but they are an experienced team in the Champions League
chelsea made many good signings this january, but many players are still adapting to the team, but the champions league games are even further away from happening, which will allow chelsea players to get used to the team and manage to bring a good result mainly because will be playing against an opponent that is not as strong as in past seasons
we all know that Dortmund prioritize selling players over winning titles, although they have come far in the champions league they are undoubtedly more interested in selling their best players so chelsea will be playing Dortmund without their good players, I don't even know to what extent dortmund already sold players this january but i'm guessing they sold their best players