Shouldn't a larger sway might, but the strut tower brace is to get rid od the entire frame rollin. keeps your car straight and makes the suspension do the work.
all it helps with is body lean... not suspension twist. ive seen guys put a huge sway bar on and have issues. but never heard of a brace doing that... plus it should extend the life of the body by reducing flexture and the chance of the frame cracking... or at least thats what my engineering tells me...
not to underestimate the experience of some advanced auto parts employees but most of the people that work at advanced are not qualified mechanics and should not be treated as one few have the experience in the field of front wheel drives and those of us who drive them and none as well as those who tune and drive them as someone said in here sway bars maybe but the strut brace is for frame roll they are correct when they say that a sway bar has direct effect on your suspension and grip a strut brace stiffens the frame of the body actually makes the tires stick better if you have a skid problem check tire pressure and tire status if they are worn and old they can loose grip and incorrect pressure may cause inequal power distribution and cause on to spin
