We have to try to evaluate if the lightspeed feat seems to be an outlier, given the general displayed speed of the characters in relation to each other.
However, like I have mentioned many times,
the ridiculous amount of enormous inconsistency for Marvel makes scaling the characters extremely hard, so the ratings will not remotely be perfect no matter what we do.
But the choice lies between semi-flawed estimations and just outright deleting all of the Marvel profiles, since their statistics all shift completely from story to story.
Currently, most of their speeds are scaled from Spider-Man, but even rating him as supersonic may technically be an outlier, given that he is generally considerably slower.