I don't think the locals would be overly outraged by two dudes fighting in a bar. It's a common enough occurance here. I think the fact that it was two Laowai fighting probably just made it a more intriguing spectacle. It's a bit much to suggest that such a minor incident would damage the reputation of foreigners on the whole. It's also somewhat condescending to the locals. I imagine the majority here are not so narrow minded as to judge a whole race based on such a trivial incident. That said, two grown men fighting in a bar is never cool is it? Unless they're dressed as giant squirrels, maybe.