From what I understand, if you took away how dangerous they can be then they dominate the western honeybee in every regard.
I found the line in Wikipedia that makes the claim that "The Africanized bee is considered the bee of choice for beekeeping in Brazil" and the source seems to be a 2009 paper from volume 23 of the journal "Brazilian Journal of Agricultural Research" (Pesquisa Agropecuária Brasileira) which doesn't exist as volume 23 was in 1988 (see http://www.scielo.br/scielo.php?script=sci_issues&pid=0100-2... ).
I found the line in Wikipedia that makes the claim that "The Africanized bee is considered the bee of choice for beekeeping in Brazil" and the source seems to be a 2009 paper from volume 23 of the journal "Brazilian Journal of Agricultural Research" (Pesquisa Agropecuária Brasileira) which doesn't exist as volume 23 was in 1988 (see http://www.scielo.br/scielo.php?script=sci_issues&pid=0100-2... ).