Rwanda is rank 122 and Nigeria is rank 31 place.
These rankings don't matter much anymore, just look at where Nigeria is in the table:
https://www.skysports.com/fifa-world-cup-african-qualifying-tablesee that Rwanda even surpassed South Africa in the table, at least for now, my point is that the bookmakers do not offer money, when they put odds of 2.00 for the favorite, Is because of the analyses they did they concluded that there is a high risk of the favorite losing, as I have seen that in this thread there is a lot of talk about the Nigerian national team, so I thought I would see odds of 1.20 in favor of Nigeria, because that would mean that many people believe that Nigeria would win easily, even because I see Nigeria with a much better squad than Rwanda
Oh, now I get your point. You feel there is a lot of hype around the Super Eagles players. So, you expected the bookmaker to favor the Nigerian team as the clear favorite to win against Rwanda, with a high odds difference, something like 1.20 against 8.09. Let me put it this way for you, sometimes our most favorite team may not be the winner of the match. And the fact that a team is hyped or has a lot of players playing in top leagues and huge comeptitions doesnt mean they are the best team in the international level to win the others.
Truth be told, if you are talking about best players in Africa, you can count Nigeria to have one or more of the best players doing very well in top leauges. Much is being expected from the when they come back to the internaiton stage so it is much likely that the bookmaker do see it that way but considering the last meetings the odd margin is not quite large.