(1) robot head antenna cannot rotate
(2) smokestacks not extendable
(3) only hips have ratchet joints
(4) no cover for leg-wheels
(5) leg ventilation flap part is molded onto leg and not able to flipped in truck mode
(6) ankle tilts only 2 positions and can only be activated when slide away inwards
(7) feet sole has cavity
(8) plastic wheels with big rims
(9) light-up eyes and head crest
Overall a nice oversize MP-10 figure if one does not mind the simplifications.
Eyes and head crest can light up! Very nice...
Comparison with BMB KO OS POTP Optimus Prime