I am not sure this has affected 360 sales that much, many vivid XBox fans running into issues bought more than one unit (compensation for those still waiting for RRoD issues to be solved). Sometimes affected people sell their old unit for cheap on second hand websites and buy the latest model in hope they are freed from issues (I know several who went from 360 premium to Elite, again suffering similar issues). Most consumers are still unaware of how extensive these issues are.
I think this will mostly affect views on a possible successor Microsoft may launch in the future. Most XBox fans already upgraded towards a 360 due to their platform not seeing any more software support for the last 2 years and all major exclusive XBox titles already saw sequals on the 360. Still millions of XBox users in North America haven't upgraded and I think the bulk of them eventually will. I don't think RRoD will have much of an impact from the long perspective. Only I think many of those fed up by the situation (RRoD, drive wearing, disc cratching) will eventually buy a PS3 or concentrate on PC gaming.







