The X-51A's first flight lasted 200 seconds out of a planned 300 seconds. This is clearly a mostly-successful test, and beat the then world record set by the X-43 at 12 seconds. The X-51A's fourth flight test is the new world record holder at 210 seconds, only 10 seconds longer than its first flight. China's "successful" test involves an unknown duration, unknown velocity, and unknown flight parameters. It could have been called a successful test if its sole parameter was "able to ignite scramjet engine during flight". That you can even attempt to compare the X-51A's record with this mystery missile's 'record' is ludicrous. And BTW, if you thought 2 tests are not significant, why is it that you think China's single test (with totally unknown parameters) is now significant??? 1 test has NO MEANING CAPPICI LOLOLOLOLOLOL
Your hyperextremist fanboism is admittedly far more amusing than it is annoying, but regardless, you have not done very well in this thread. Factual errors, logical inconsistencies, and glaring lapses in judgment and common sense have badly plagued your last dozen or so posts.