The TC's talking about that Celebi you get from using the Pokemon Bank. It seems you can't soft-reset for a good one, since it's not given by a delivery person (it's sent directly to your PC Box).
As for me, I don't care. Just having a Celebi is more than enough for me. --- "Many of you feel bad for this lamp...That is because you're crazy. It has no feelings! And the new one is much better." (IKEA's Lamp commercial)