I'm going to say English majors since you can practice games and improve easier than LR or RC (which I'm guessing Comp Sci majors would struggle in .)Engineering majors destroy games. Not sure about Comp Sci (they're totally different majors.)
Speaking as someone with an engineering degree who has worked with compu-geeks for the past 5 years, I would be amazed if engineers outperformed on a general basis anyone whose major required reading and writing. True, the logic games may come naturally, but that's only 25% of the exam. The other 75% requires reading comprehension skills. At Penn State, exactly 6 of 130+ credits required for an engineering degree are reading/writing related.
Im dual majoring in physics and EE ... and yes lg are simple; however, rc and lr arent that bad either. I actually am required to read a TON (yeah...you heard me right - 2000lbs worth)of technical work for both class and to keep current on present research. Reading certain physics journals put any article on the lsat to shame in terms of difficulty. So, even though I'm biased, Im gonna say the engineer would do better. However my opinion probably doesnt count b/c I think lowly of liberal arts majors.