AnonymousWhy would it be false?
Because I can't be sure. First, I am not a native speaker. Second, I don't understand English the way I'd like to, not yet. Therefore, I can't know how a native speaker perceives English in general. It's something I've always wanted to know though. I wanted to post a video of a guy talking in the strongest southern accent I've ever heard, to see how natives speakers understood him, but there is too much inappropriate language in it, so I doubt I'll ever post it here. Then I remember seeing another video, Scottish accent this time. I basically didn't understand anything the first time I watched it, but later on, the second time, I was able to understand more. And what about songs? It's often impossible for me to understand, and I usually mishear a lot of things... especially in rock songs.
So my understanding is still limited, and I can't know how a native feels about their own language, and what they actually understand. I've never liked statistics very much, especially when they involve such subjective issues, so I usually never want to believe everything someone says, without at least a reasonable explanation. I would expect native speakers who travel a lot to be able to understand different accents better than those who have always lived in the same place, work in a field eight hours a day, and rarely watch TV... just as a sensible thought. But what could I say in general? Nothing...
AnonymousSo, looking towards an truly international lingua franca, many native speakers would be poorly equipped to deal with such, right?
I would say maybe native speakers will have to get used to Indian accents, and Chinglish.