You've pretty much hit the nail on the head. When I first saw it I thought "Does it have the same kind of transformation as Star Convoy Optimus?" (SC Optimus being the last of the G1 O. Primes and a Japan only release and reissue).
Considering SC Optimus has battery operated tank tracks on his trailer for starters and is also a triple changer that Armada Optimus seems to be modelled on and comes with a mini Hot Rod, the only advantage this RID Optimus has is through better articulation and poseability and that's not saying much.