The Jazz review shows off the details and features in both the Vehicle and the Robot Modes, especially the music speakers gimmick. These speakers are very articulate, being set on clips and ball joints. 

The "Grappel" review does the same, but goes the extra mile of showing the molding differences between "Grappel" and Universe Inferno (there are a lot more of these than expected). Also, this particular figure of Optibotimus' is missing his rubsign, so this one is completely unmarked in his allegiance.