Which doesn't prove or disprove anything but it does indicate a lack of evidence that a problem currently exists that needs to be resolved.
Are international operators being forced to land on runways they don't consider acceptable?
I'm not sure how you can reach that conclusion given the anecdotal evidence that's been presented on this thread. Just because there hasn't been any over-runs doesn't mean that the potential isn't there. Most of us who operate in and out of Oz airports where the duty runway often differs from the one we need to use are aware of the limitations and plan accordingly, but that doesn't mean because it hasn't happened that it wont happen.
As for being forced? I don't think this is happening, but there can be a subtle pressure, generally reinforced through poor decision (on the pilots part) making and a lack of experience, as others have said, certain cultures a mere few hours flying time away from Oz seem to find it more difficult or are less able to challenge/query ATC instructions.