There is a possibility that the match will end in a draw because both of them might be in a good situation. But I think Leverkusen might be a little bit superior. Leverkusen has drawn too many matches this season, of course, that makes a few points difference with Munich. They will maximize everything to get 3 points. Dortmund is not weak, but I don't think they are really above Leverkusen with the current situation. There might only be a few goals in this match, Leverkusen might lead.
Well leverkusen has been using this draw pattern of getting through the season because even last season most of their games was draw and they won only but a few games and then were lucky to stay unbeaten till the end of the season and maybe this season they are about to be aup with almost same thing in that they haven't been able to win games well enough and are still managing to stay afloat, so far they have lost only a few games and so they only win a fee games but continue to make good positions on the table.
Sorry, but your assertion about Bayern Leverkusen is pretty wrong. Leverkusen recorded only 6 draws through out last season with zero loss and 28 wins in the league, accumulating 90 points in 34 games, scoring 89 goals and conceding only 24 goals which was the least number of goals conceded by any German team in the Bundesliga. That's a staggering wonderful performance given the excuse that Bayern Munchin dominated that league for a complete decade straight.
This season if you ask me, Bayern Leverkusen ain't really doing bad for a team of that level, they have played a total of 15 games so far in the league so far. 9 wins, 5 draws and 1 loss, though their back line seem to be leaking as they have conceded 21 goals already but they have also managed to score 37 goals so far. Bayern Leverkusen are in second position and 4 points behind table toppers Bayern Munchin, if I'm asked, they are not doing badly currently.