You're right karaszero. I don't remember seeing the Wakandans using a pure laser beam or energy particle beam to destroy Chitari ships. Maybe we're to assume that the rockets launched from the turrets were laser-guided somehow.
Just a note. In the first movie, they established the the invaders used Vibranium in their ships and personal armor. It also established that vibranium could only be penetrated by vibranium. (Until they found out about the gamma rays.) So, if the Wakandans used laser technology, it would have been useless.
As far as why did they dress the wakandans in loincloth and gave them spears.
http://forum.newsarama.com/showthread.php?t=79839 "NRAMA: In the comic books Wakanda has very advanced technology. It the movie Wakanda soldiers use spears and then at other times they seem to have super technology. Why the dichotomy?
CK: I think there’s a beauty to the lost kingdom. That idea of a land that is completely untouched by the outside world’s laws and decrees because it is a culture that’s really embraced its past. They dress in very humble means because it’s a part of who they are. If you look at the underbelly of Wakanda it’s full of high technology and enhancements but the people are very spiritual. They still live with panthers and they have ancient ways that they have never needed to change. When you can throw a spear that’s made from vibranium and it goes through Giant-Man’s chest or Iron Man’s armor it makes you question “then why hold a gun?”
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