User blog comment:Forrestib/Something new about the Black Trailer/@comment-3146930-20140717090119

As shown within the show, Ruby may not have full control of Semblance. Her Semblance as far as we know is speed and she has shown this off, but then there are times when she could have used it that she didn't (like being chased by the Death Stalker). In the trailer and in the show, it would be cool if Ruby could just continuously use her Semblance to kill all the enemies in her path, but we don't know how much of a toll that would take on her as using a Semblance can tire you out (as seen with Weiss against the Nevermore). It also wouldn't be fun for us, as all we would see is a red blur, if we saw anything at all.

With Adam, I don't think he can teleport because if he could he would have appeared next to Blake instead of dropping down from above. Also even if he caused minor damage to the Spider-droid, he wasn't causing enough damage to stop it (especially considering the thing could transform into different modes). The final attack was more of a last resort finishing move to take it out completely, not a result of being weaker. As far as him just dropping from the ceiling, Adam most likely used the Rule of Cool to appear where he needed to be. We don't seem him for a second between shots so maybe he jumped over and off the ceiling to grab Blake.