Xabi alonso talented coach. A team like Leverkusen was able to dominate the Bundesliga with the help of Alonso. So we have no doubt to take the ability of Alonso. The Real Madrid squad is very powerful. The squad has a lot of talented and experienced players.
With the help of Alonso, Madrid can be expected to do well. Although Alonso is not as experienced as Acelotti, it has the ability to manage big clubs. Also, Madrid can also win a title this season. The team lost badly against Barcelona. The players are desperate to win the title.
I wouldnt say that Bayer dominated the Bundesliga. They just managed to win one season and maybe they simply took advantage of the fact that Bayern were going through a crisis. After Kompany came to the team Bayern started getting back to their usual game and Bayer were left without the title so its definitely not domination. Lets see how he will work at Real Madrid. Ancelotti definitely has much more experience and Real have a lot of problems right now especially in defense. To handle that you also need solid experience.