sequelize/sequelize — pull request #738 by durango (2013-06-29 03:35:59+00:00)
Title: bulkCreate would have problems with a disparate field list. Closes #736

I'm not sure if this affects performance much, probably a little bit especially with a lot of rows... but there are much bigger things to blame for performance issues than this PR. Sequelize needs a little bit of remodeling pretty soon ;)