Portugal - 1.65
Uruguay - 3.00
Ghana - 11.90
Republic of Korea - 11.90
As you can see, Ghana is a clear outsider, and Portugal is an indisputable favorite, so, presumably, in a personal meeting, Portugal will easily beat Ghana. And by the way, judging by the manner of the game, it looks like the truth - the Portuguese team will be extremely inconvenient for Ghana.
Both, Ghana and Korea will have a difficult time in that group. They mustn't lose to the stronger teams if they want to stand a chance for qualification
I think the bookmakers use much more accurate estimates than FIFA since they are responsible for their estimates with money. FIFA ranks teams on formal grounds, while bookmakers use more complex models that include many parameters and not just game results. I trust bookmakers' estimates more than FIFA's, although of course the reality may turn out to be quite different. For me, for example, it was surprising to see such a clear leadership of Portugal.