It's different, and that's the point I wanted to make. A botnet owner could use tor to hide his own computer's address, and let the bots flood freely. Even if a few were traced, he doesn't care. Tor gives him privacy (for his master computer) without compromising his attack potential.

A 4chan poster can't do the same thing. He's attacking from his own computer. Either he attacks through tor (slow) or he doesn't (unsafe). Hence why I thought the post above does not make sense for anon's case: he can't hide his traces without channelling the attack through Tor itself.