Yes you are right, a draw is not impossible, especially since the performance of both teams also looks good and it is difficult for us to predict who will emerge as the winner in this match.
However, usually something we don't think about happens in football, usually due to technical or non-technical factors. We cannot see what will happen in the match, because one of them could experience something unexpected, a red card, a strategy that doesn't work and so on. That can be felt by Bayern Munich or Barcelona.
The only thing that will be considered a surprise in the Barcelona vs Bayern match is perhaps if one of the teams loses with a big defeat or with a large number of goals. But the chances of that happening seem quite difficult. Because the performance of the two teams seems balanced at the moment. So that a fierce match will really happen. but I hope the match will be exciting, showing high aggressiveness from both teams. I always feel bored when I see both teams being too careful and playing the ball more in the middle.
Well, this is something we can't predict yet, because in my opinion, even if one of them can win, the victory will be by a narrow score, but if the score is a landslide, it will be a surprise.
But it could happen, Barcelona once experienced a very embarrassing defeat, even until now that score is still a laughing stock for many people, and now when they meet again, the score 8-2 is still the spice before the match.