Do you expect to see the same odds from different casino's? Definitely you will have to come across variations in their odds because some are being intentional about this and are doing it because they wanted to attract as many as possible to use their platform because of that advantage or benefits, that is why you could see a little difference that some casino provide higher odds than the other on the same games you don't play on each platform and this is not new at all because they have been doing it over time and it's all about business strategy.
It's nothing like that, just read the topic!
2UP offers enhanced odds on some matches, far above any randomness, and this is for one result, keeping the opposite in the same range, so you won't have way lower odds for team B for example.
There are other sports books that offer such things and there are some with a different approach, for example Betfair gives me 5 odds boosts I can use on any game with an under 100 pounds bet, you can just increase your odds by 25%.
It would be interesting if we had no limits on which matches we could boost the odds on, but if it was still limited, I don't think it would be any different from promotions & offers on other casino sites.
That would trigger in some cases sure bets as odds variance, including bonuses, would make betting on every result profitable, they would either limit the bet with the bonus or limit the number of enhance odds they provide.