Hello everyone,
I wanted to share my experience with the LSAT. I prepared for it for a few months using Powerscore and Kaplan, and following a few weeks of SC, I scored in the 97% on one of the Kaplan CATs. The GMAT tests skills far more in the verbal section than in the quant. I am a foreign national, and considering that I did not have the verbal skills to score that high, the LSAT gave me a far more comprehensive preparation to improve my skills. The LSAT is just much more technical. Even if you never see parallel reasoning in the GMAT, try to study it because it will develop your analytical skills. If you master easy to medium difficulty questions from the lsat, and you spend a few weeks refreshing your grammar, I believe that you will be ready to perform at a 90+ level. Think of your potential as a threshold that is let's day at 70%, however you are performing at 40%. Standard GMAT preparation will probably help you reach to that 70%, but it will not help you advance past that point. To move beyond that 70% threshold, you need some major restructuring of how you brain thinks, and only something technical can do that. The LSAT is not necessary to achieve a high GMAT score on the verbal, but I believe is sufficient (with some grammar review). Considering that I have spent several months on the LSAT, I can relax and focus on my quant section. On a side note, the analytical skills developed in the LSAT have helped me in many ways with the quant section. I hope this helps, and remember, you potential to improve is far greater than your original diagnostic score.