Maybe you will turn out to be right about that in time. Because Union Berlin haven't been in this kind of a situation all the time so far. There have been ups and downs for them during the season. I don't know how long they can keep up this chase for the league title. I just assessed the situation considering the current placements in the standings.
Dortmund are making me really surprised by the way. Normally the Bundesliga title is not their main target according to their vision. But now they are very close to the leader and let's see how things go in the coming weeks.
Dortmund pleases and there is still some semblance of intrigue, although 20 rounds are already behind, but when I look at bookmakers' quotes, it becomes funny to me. Bavaria - 1.06, Dortmund - 16.66. Lol! Looks very disrespectful to all clubs except Bayern (Union Berlin has odds of 26). In general, I also think that everything will end as always, but these odds look unfair.