Benfica managed to secure 3 full points with their win over Rio Ave, although Benfica got win in the match Rio Ave also performed very well as I said if Rio Ave is not team that can be underestimated when playing at home and they were still able to create 2 goal.
Benfica and Sporting will really be able to determine who is the best when they meet later, their meeting is still quite long time but at least both team can continue to compete in getting points and it is little difficult to predict who will win the title because both have the same percentage of chance.
The difference between Benfica and Sporting is 3 points, but Benfica has one more game in hand, if they manage to win this game, they will be able to have an equal number of points with Sporting. And it seems that Sporting has already improved their game, after the departure of Amorim they had a difficult period, but it seems that now they are ready to fight again. They will play each other at the very end of the season, before that time everything can change.