No, this is a special case. It's a 15 KHz sinus tone (a little dirty).. You can create a similar one by using a base frequency of 15 KHz and a modulation frequency of 2 KHz, modulating by some <500 Hz, then adding some noise which has to stay "above" the ATH (this step is important, it eats up bitrate).
It shows a flaw of vbr-old, but i don't think it affects "normal" music too much. Basically, the fact that --r3mix comes out on top of --alt-preset standard should be proof that this result can't just be projected onto "everyday encoding" like this.