Realism? Dude, it's not like they CGI-ed the swordplay in the Mustafar fight. That was their actual movements, in real time. So if they actually did that, that means it's in the realm of possibility. I don't know why two actors awkwardly swinging laser swords at each other is any different from two actors SKILLFULLY swinging laser swords at each other.

Point is, while some people may like the OT fights better, that doesn't mean the Prequel fights should conform to them. At least in my opinion.