I'm pretty sure Anakin could've killed Obi-Wan...
I might've missed something, but in the Anakin/Obi-Wan fight scene, I think Anakin could've killed Obi-Wan. Remember the part where Anakin jams Obi-Wan's lightsaber into Obi-Wan's neck? If he'd ignited it, couldn't it have killed him? I mean the blade would have extended right into Obi-Wan's neck. Maybe it was the other end of the hilt, but it looked kinda like the emmiter side...