Boca definitely has a great record. BTW, the last time they lost to a Brazilian team in finals, it was for Fluminense in 2008. I think it was the first time in 40 yrs that they lost to a Brazilian team.
And I don't wanna diminish Argentinian teams, but they are quite predictable playing abroad. Always playing with 11 men behind the ball, very well organized, very competitive, good passing, great counter, very efective. But in the end, it works, so nothing to complain about.
Silva is horrible, Somoza is fairly good, but I think Ledesma is the one who will be missed. But I don't think it compares to the players Fluminense lost.
Are you Argentinian?