Atletico unbeaten performance is not something special that you will see as a fact to think they will be that strong for Real Madrid moreover they were not the only team that had an unbeaten performance even Real Madrid and Barcelona were unbeaten up till the matchday 7, so it not something special. furthermore Atletico Madrid had about 3 draw games out of the 7 games that you are claiming were unbeaten. So all I want to know is that even though Atletico Madrid have a strong defence, it will be easy for Real Madrid to penetrate and make 3 points in that game, so calm down and wait for the game day.
They can never compare Real Madrid performances with the Atletico, because Real Madrid performance is far better then Atletico they remain unbeaten not mean that they can able to win the Real Madrid I don’t think they can have challenge in that they will fine the match very easily to win.
Because if look Real Madrid this season much better than others season, since they’ve a great squad that can stand hold the their midfield well and also maintaining their defense to avoid any of there opponents win them; Barcelona are the one leading the top of the table with high points, but I’m having hope for Real Madrid that they will soon catch them up.
Football is no longer played by history or past glory so I suggest you follow the current performance of a team this season before thinking that some other teams can not defeat them because of their past history. Real Madrid have notable star players in the team but they are yet to performance like the strong team they are this season, ATM is not playing badly this season, they have a good team and they are familiar with the team they are playing against which is Real Madrid, they will want to use the opportunity now that the Real Madrid team is still struggling to adapt to the perfect strategies to defeat them because this home game is the right time.
Real Madrid has not payed a strong team this season but they have had difficulty in winning the small clubs they play against the game against ATM will see them get better or go back to the drawing board.