As they saying goes, "the arrogant will be defeated".
I am not saying that their facilities are inferior to ours, but
such blatant bragging about your abilities would only lead to
resentment. Furthermore, resorting to insults about others is not
helping matters.
In short, they are asking for people to attack them. But we shall
not rise to their crazy challenge -- no sane human would. If they
want a fight, nobody is going to give it to them.