Odds given by a match depends on how the house edge handles winrate. For instance for some the odds can be slightly higher in other platforms from what i've experienced. Your technique is doable but this type of bets can be risky according to the photo shown above. What site are you betting on, by the way?
I think odds giving is based on activities of the clubs, and how influential is the particular club, and another aspect, is how regular the wins matches, I believe this is the strategies they use to give odds to a specific club match, going in the aspect of performance, club's can performed well today and tomorrow it happened to lose in terms of performance, shall we are all assuming, but from the subsequent winning a club can be grade higher.
Odds are given not only by the mathematical formulas the casinos use to try to determine how likely an outcome is supposed to happen, if that was the case then the odds will never move after they are published but we know this is not true, so what else causes odds to move during that period of time? And that is the demand of the gamblers, if during the week there are too many bets on one side the casinos could risk losing money if there is a different result so they give better odds to the other team or player to try to make people to bet on the other outcome and balance their books.