No the super eagles is not unstoppable on the way of being or having the best on this qualifier but they may only be unstoppable in qualifying for the world Cup because since several other countries are still better than us we cannot claim unstoppable
The bookmakers are giving odds of @1.99 if the Nigeria national team manages to beat Rwanda. It seems that the bookmakers are not taking the Nigeria squad very seriously, but rather are looking at Nigeria's bad past performance, who has not yet won in this group, while Rwanda only has one defeat. The last time Rwanda played against Nigeria, Victor Osimhen and other good players played and still Rwanda win.
The bookmakers are strictly business oriented people, if there is a stats that proves Nigeria has big upper hands to win this game, they wouldn't give the 1.9@ odd because if Nigeria wins the match and many people win this game, they will be questioned on their decisions to give Nigeria such odd instead of Nigeria. More over, it can get reduced or increase before that day as they get some hints and information, there could be one player that can change everything about the odd.
Nigeria and Rwanda don't really have much historical data, the ones they have in the last 5 matches held, Rwanda lose a single game, they draw 3 and while Nigeria win one as well. This is a tigh stats in my opinion but what surprises me is that even by ranking, Nigeria isn't there mate, Rwanda is rank 122 and Nigeria is rank 31 place. Unless they are using home game as an advantage here, there is nothing special about them, we shall find out that very day.