Vincent Kompany insists Belgium have a good chance against Argentina in their World Cup quarter-final - with Red Devils coach Marc Wilmots claiming the South American side "lacks balance". The Manchester City defender, who is a slight doubt for the match in Brasilia on Saturday after picking up a groin strain in the 2-1 win over the USA, said the reason Belgium had failed to impress in the group stage was that their opponents had played it tight.The USA however played a much more open game and both sides had chances before Belgium secured their progression with two goals in extra time. Kompany said: "If Argentina decide to play their usual attacking game, we'll have a pretty good chance against them. "You need two teams to produce an exciting match. The Americans tried to push forward. That's all we were asking for. It takes two to tango, and they wanted the same thing as us."Wilmots said he was pleased that for the first time in the World Cup Belgium were not the favourites and questioned the make-up of the Argentina side.The Belgium coach said: "I know Argentina can play with three central defenders but I also saw a lack of balance in that team."For once we are not favourites and I don't mind about that at all, but we want to win and we want to go all the way."We will make sure we do well against a strong opponent but at this level we are all strong teams."Meanwhile, Everton striker Romelu Lukaku spoke of his emotions after turning the USA match in favour of Belgium - he created the first goal and scored the second himself.He said: "I almost cried after my goal. It was the greatest moment of my life. Scoring at the World Cup at the age of 21 is something I've trained for since I was a boy."