A new paper of ODF Alliance is available.
http://www.odfalliance.org/resources/IssueBriefAccessibility.pdf
Some concerns of the comparison with the competitor standard:
OOXML does not satisfy Web Content Accessibility Guidelines v1.0.
OOXML's failure to reuse existing open standards that impact accessibility increases the burden on assistive technology developers, who must now decipher and support alternative ways of doing similar things. These open standards (e.g., XForms, SVG, Xlinks, MathML),
The paper concludes:
Governments should demand that digital documents be accessible to all. A comprehensive accessibility analysis of OOXML by industry is needed. Until completed and shortcomings addressed, OOXML remains an “inaccessible document format and not suitable for international standardization nor widespread adoption.”
What do you think? I suppose it would be a good idea for my MEP to write a parliament question about the existance of accessibility analysis for OOXML. But I should not further overload him with my computer stuff. Do you want to try?