Being a very hard fan of Werra and enjoying JB as well, I really think that if you want to be important in the future, you need to be in WMMM, simply because BCBG's singers are too much loved by JB, not only Seguin, but Genta, Josky and all of them basically get everything without much effort, most of the people of BCBG unless they have problems with Seguin would never leave and think solo career is suicide, while on Wenge, Werra can help you in many ways but if you are not talented you will get booed or not taking seriously, like Robinio that really was a marginal members since he is not a very good singer.
And I think this is what leads MM's alumni to be more successful.
Simply because you need to know the hunger for then appreciate eating, if you have already a lot to eat at home, you will never leave your house, on the other side, if you don't eat at your house you'll rather die once you are out then being without food.

Simply because you need to know the hunger for then appreciate eating, if you have already a lot to eat at home, you will never leave your house, on the other side, if you don't eat at your house you'll rather die once you are out then being without food.

that's exactly what Maison Mere members know they need to work hard and excel if they want to be recognized. It is true that JB has already old members but for example, young people like Abel de charme and Abraham, to name a few, are really talented and with a little more work and promotion they could reach the same level as Robinio, Deplick or Heritier and thus bring a little more competition in the 5th generation and make it stronger

another massive difference between bcbg and maison mere is that most musicians of maison mere prepare their move months before leaving,while most in bcbg start solo career because of a situation so the start is always slower as they have a lot of things to adjust to
then the work ethic also matters  maison mere guys want to have instant impact at all costs while bcbg members tend to act like there is plenty of time ahead let me go step by step(you can see it with album releases abraham,zakoko and co have released zero album except djino