Yes, really. That panel doesn't prove anything. Sasuke was just talking out of his ass like usual.
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The novelization of the movie:
It was terribly dark…like everything was covered in ink.
The man was running through that darkness without the slightest bit of hesitation.
His eyes weren’t that of an ordinary person.
His eyes held a complex pattern, proof that he was person of lineage to a restricted bloodline, the holder of a doujutsu.
Besides, for this man, things like the dark weren’t enough to scare him.
The man’s name was Uchiha Sasuke.