https://www.youtube.com/watch?v=ihhv4PkM4C8
cersei and tyrion on screen together made for some of the show's best scenes
they are a lot alike.... cersei is intelligent but was always underestimated, and never given the chance to hone her intelligence because she was not the right gender...instead of grooming her to become a ruler, she was married off to the best suitor...all of which has lead to the massive chip on her shoulder and her refusal to heed the advise of others
tyrion obviously is also very intelligent, but he's far better strategist because he was given the opportunity to expand his base of knowledge ...and has constantly had to use his intelligence to out maneuver those bigger and stronger than he was
though the apple of twyin's eye, jamie was always the weakest link... he's the most short sighted... he rarely thinks before he acts... the lest ambitious ...allows himself to be manipulated by cersei