Board Thread:Speculation House/@comment-24718692-20140322030224/@comment-28277272-20140322215744

Remember, the members of team RWBY (and team JNPR too for all that matters) didn't leave exactly at the same time, but one by one.

Weiss was the first to leave, then there was a pause, when Ruby said "to... to class!". Then Ruby left, then Yang, then Blake. (Then Jaune) Which means Yang left earlier, and that would explain why she is neck to Ruby. Oh, I'm sure none of them were running at full speed, because even though missing class is an important issue, I don't think it would be important enough to use semblance. But you made a rather interesting point: almost everyone catched up to Weiss, so either she was slow (certainly not on purpose) or they are all incredibly fast. No matter which, Ruby is still running faster than Weiss. Which means Weiss is faster only when she uses her glyph, and she'd still be slower than Ruby using her semblance.

(Just a note, on the picture, Nora is behind everyone, and Pyrrha is even further behind)