As per article:

"Independent tests have shown less powerful cars, such as Audi's A4 3.2 quattro and BMW's 330i, will out-maneuver the IS 350 in the slalom when similar features are turned off, at least when piloted by a professional driver. So, if you're a pro, you might prefer a vehicle that allows more hands-on control; but you're probably not even if you think that you're particularly good (I fall into this camp), the difference being similar to any one of us weekend warriors taking on a professional athlete at their given game - not a pretty sight. Therefore, regular folks who might occasionally like to drive fast but still want to end up alive and kicking at their destination won't be able to find a better road companion."