At a very simple level, if we can enable Qora trading in the Bitshares Exchange Network, then each coin would get a benefit:
* Qora would solve the problem it has had for many months that it has no reliable exchange. Its traded on bter (lol) and poloniex, and both of them periodically have problems and disable trading/withdrawals/deposits. Sometimes for months. So the Qora community, though small, is actively looking for the service Bitshares provides.
* Bitshares would gain more customers, which is more transactions on the Bitshares network, and possibly the support of another crypto community.
Both coins are working on different things right now, which arent really in competition with each other. Qora is currently focused on decentralized blogging, web, and social networking, and on smart contracts (AT). Bitshares is working on being the primary decentralized exchange for all crypto.
Of course, Bitshares does have future feature plans that overlap with what Qora is doing, but this isnt the primary current focus.