That's a though question to answer.
It is a much smaller event than the CJC for sure (in terms of space and vendors, the dealeroom is maybe half the size of the CJC's). So that factor alone statistically speaking should reduce the odds of finding ARAH gi joe, and second, because it is an expo for all kinds of toys not just Joe, so that pretty much should diminish what's left of choice and variety for ARAH original stuff.
As for my own experience, It happened to me before that I would walk out of a gi joe convention without finding anything in particular. On another hand, I would go to this random event and would find the find of a century simply because X guy who usually doesn't bring any joes, bought a lot from a collector, and I happened to be at the right place at the right time.
So there is no real answer to your question, except that you alone can answer if you decide to come. You'll recall that that is how I found my Starduster for 7$ (when he was worth 60-75 at the time) at a non-Joe event. Strangely, I kept going years later and never found Gi joe figures again at that one specific event...
