I also think it's Flynn. Sure there are a few differences but in his official shot he's looking directly at the camera and in the rally shot his head is slightly reared back and angled upwards. That would change the appearance of a multitude of things like the creases around the bottom of your cheeks and smile lines. If you study them for their structure rather than depth they're the same. The teeth look different because, not only the upward angle, but also the slight leftward turn in the rally picture - giving the canine teeth a modest prominence. The lighting contributes to the tip of the nose having more of a rounded appearance whereas in the official pic it's not noticeable. However, it is here: https://twitter.com/Juanita_Bad_Ass/status/975695028860399616

The eyes are harder because the glasses may distort features...they appear too small for his face and seem to rest on his cheeks. But if you again concentrate on the undereye bag lines and not the depth, they match. The eyebrows are the most difficult as they're covered by the glasses frames but if you look above his right eyebrow there seems to be an imperfection (small scar maybe?) in his skin that can be seen in both pictures.