At best, that's subjective, but it's fact that JetBrains is comically far behind when it comes to AI tooling.

They have a chance to compete fresh with Fleet, but they are not making progress on even the basic IDE there, let alone getting anywhere near Cursor when it comes to LLM integration.

JetBrains' advantage is that they have full integration and better understanding of your code. WebStorm works better with TypeScript than even Microsoft's own creation. This all translates into AI performance

Have you actually given them a real test yet - either Junie or even the baseline chat?