The Sims 4 has boasted about having smarter sims with wacky stories. So far, the stories are lack luster because of limited game play options and the sims are as smart as rocks. Here's just 1 exampl...
"Smarter Sims". That has been a joke every since TS4 release. They definitely over exaggerated this so called "feature". I do say that TS2 probably has the smartest Sims IMO. At least as far as emotions go for sure.