Jaime has a huge advantage that Cass doesn't: Exposure outside of the comics. That cartoon is why, even though his series was cancelled, he's getting a backup solo strip, pronto. If the cartoon goes on for a while, Jaime, not Ted, will be who is primarily identified as Blue Beetle, if he isn't, already.
Think of how many people watched BtAS and it's spin-offs vs how many read Cass's series. Look at who's getting books or backup strips, this June: Harley, Jaime, Renee... Yep, Cass isn't as well known as Renee Montoya, let alone Barbara Gordon. It's the characters that have either crossed over into other media, like Jaime, or originated there, like Harley and Renee, that are getting pushed.
They really needed to have Cass as Batgirl in that Batman cartoon with the different designs and voices from a few years back. Even though it wasn't as good as the earlier one, it would have gotten Cass some much needed exposure. As it is, when you say "Batgirl", most think of this cute redhead.