Critically debate the similarities and differences between action research and audit

This is to be part of a larger paper outlining a service development project.The project initially aimed to use a model of action research however time,niaive professionals to research led to the model utilised being much closer to audit.
The project aim was to affect a change in practice quickly the process of reflection in depth did not occur and the outcome of questionnairres and data afforded knowledge of attitudes and beliefs in practice to affect change but did not generate new theories or ideas for research.
Therefore i need to identify the two comparison of the two processes and establish why the development utilised audit as opposed to action research and the pros and cons of doing so.