The December 2006 issue of CHEER has an article by Naser-Nick Manochehr, The Influence of Learning Styles on Learners in E-Learning Environments... who shows that students who have learning styles that learn best through lecture, papers, analogies, labortories, field work and observations did better in web based learning. Those who like to learn through simulations, case study, brainstorming and logs did better in instructor based learning.
I have wondered about this ever since learning about learning style preferences in a seminar with Neil Fleming about his VARK quiz to reveal learning style preferences of Visual, Aural, Read/Write and Kinestetic. I have used VARK as a pre-assessment in my online courses to help the students at a distance learn techniques of learning that might help them.
Someday maybe I will correlate all those VARK scores with student performance, maybe someone else will and will comment here.