I'm a bit confused about this. So I understand that there's the Energon Optimus Prime that came in a two pack with Energon Megatron and then there's the other OP that came with it's trailer and the leg and arm attachments. The two OP are essentially the same right? I read on ebay that the two pack OP is a smaller deluxe version used for powerlinking with other Energon figures, so that means the OP with the trailer cannot? Any insight on this would be greatly appreciated.