Are you talking about all six movies? Because if so SW loses points for ****ing up a perfectly great trilogy with two-and-a-half crappy "prequels" (I liked "Revenge of the Sith" but doubt I'd watch it twice). LOTR never puts a foot wrong, and as you decreed the Hobbit movies can't be included then it's almost infinitisemally unlikely that there'll ever be more LOTR movies, therefore it's a perfect trilogy and wins easily for me.
Though I like both. But LOTR got me into fantasy novels, and has wizards elves and dwarves. I guess you could say the same about Star Wars (Obi-Wan/C3PO/R2D2 in that order) but only if you're really sad.