There isn't the smallest chance for Roma to win the Scudetto, Whoever believes that must be delusional. I was solely talking about Lukaku and his performance at the moment and I think that the 4 goals in the European Championship qualifiers have done him well. It gives him confidence and that can only contribute to his performances in the club. He has Mourinho's trust and if he stays in shape for a long time, his contribution to whatever goal Roma will achieve in the end will certainly be of significance.
You mean Lukaku can scored 4 goals in the international break, when Belgium plays against Azerbaijan? Actually, Azerbaijan doesn't have many good players, so it's reasonable that Lukaku was able to scored 4 goals in that match. But yes, it was also a good performance from him. And Lukaku should be able to scored more of goals at the Roma club later, because his confidence will increase when he returns to the club.
The performance of Lukaka when he is on international duty for his country can not be compared to his performance at the club side because looking at the players in the Belgium national team where Lukaka came from, he always have a good number of players who's assisting him to get the job done and the level of competition in the national team football can not be compared to that of the clubs because the club football is more difficult and the players you play with may not be used to each other since some of them may be new to the team and they will take some time to get used to the performance of each other and that will really have some negative effect on the performance of players especially the strikers.