Both teams played very well in the Champions League but if you look at the opponents I don't think it's tougher than Leverkusen because this club is facing clubs that usually compete in the Champions League so I think Leverkusen will beat Brest no matter what or at worst get a draw.
For the chances themselves Leverkusen has odds @1.50 as a club playing away I think that's a pretty good chance to bet on but we also need to be prepared if there is a surprise Brest itself has pretty high odds as a club playing at home that is @6.40.
To even start with, Brest isn't an experienced UCL team, in fact at some point, it feels like they were lucky to be able to make it to champions league this season because they are not a regular appearance at the champions league, and coming from a less competitive league is a disadvantage on their side already which Leverkusen may have settled from their own end even if they aren't better experienced in the UCL but they are on a very different level when compared to Brest, most likely I'm believing they will win this fixture.
Talking about the experience Leverkusen also is not too experience in Champion league even previously their status for European competitions such as Europa league or Champion league is not more than mediocre team but indeed since Xavi Alonso arrived Leverkusen has been change became an strong team in Bundesliga and Champion league but i think Brest also is not weak although they are new comer in this competition but Brest can able to gets 2 win and their statistics also very impressive because Brest can scores 6 goals and only conceded 1 goal
But indeed compared to Brest previous opponent certainly Leverkusen is different because just like i said above Leverkusen is very strong now and from this match Brest consistency will be tested whether they can able to stole points or not from Leverkusen and in this match Leverkusen status is the favourite which most people believe Leverkusen can able to overcome Brest so lets see how it goes