Isn't a more pertinent question how the Enterprise managed to beam anyone from Saturn orbit to Earth? Even Enterprise-D transporters didn't have that kind of range.
The Saturn system is a billion miles and 2.5 light-hours away from Earth. A transporter beam should not be able to travel faster than light, therefore the whole scenario was absurd.
Unless they utilised the 'transwarp-beaming' formula, and in inventing this rather clumsy plot-device, JJ Abrams has inadvertently made all Starships obsolete!!!
Don't worry, it will be totally forgotten about in the next movie. Surely there will be a "We can't beam them back, we are out of range." line somewhere.
Orci and Kurtzman can't imagine distances they were dealing with, can they? 3 minutes from Earth to Vulcan, instant beaming from Delta Vega to a ship moving at warp, the Kelvin being 75,000 kilometers away from the Klingon border (wtf, like only a second at full impulse), beaming from Titan to Earth through the Narada's shields...
Yeah, yeah, speed of plot, I know. If someone wrote a story set in Manhattan, would you say it's reasonable if he got from Brooklyn to Staten Island in a car in just a minute? Because the plot requires it? Isn't the plot flawed then?