The difference between the coefficients lies primarily in what kind of payout they assume and what probability of an event they imply. The higher the coefficient, the lower the probability of the corresponding outcome is usually estimated, although the specific estimate depends on the bookmaker and his margin. However, the same coefficients for different operators do not necessarily mean identical market conditions. Sometimes the differences are related to available information, demand, or calculation features. I think it's important to understand not only the numerical value of the coefficient, but also how it relates to probabilities and potential payouts.