The Clown Prince of Crime
Super Freak
You comparing SW to Twilight? Fight me!
I'm not saying that SW and Twilight are the same in terms of quality, just that even though "Wrath of Khan" is better than "Twilight", the ST films didn't have the same impact in pop culture that Twilight had a few years ago.
In fact, the Twilight films were also more financially successful than the current ST films, including the 2009 reboot, which got better reviews than "A New Hope"and ROTJ according to Rotten Tomatoes. Regardless of how financially successful Twilight was, and how popular those films became, none of that means that they are better than Wrath of Khan as a film, imo.
Therefore, to suggest that just because SW had more of a cultural impact than Wrath of Khan did somehow means that its better solely on that fact, it's not necessarily true, since lesser films also beat the Star Trek films in popularity, yet they aren't better.