I think we are skipping some important points here. It's not just having good apps ported to Maemo, it's also about apps having a consistent look, optimized to run on the device, and takes advantage of the device's features.

Here's Palm's criteria on how they will approve apps (repeat post). Note #2, #4, and #5:

1. Apps should be useful and engaging to users.
2. They need to have an appealing design and user interface aligned with Palm UI guidelines.
3. They are written specifically for webOS and not delivered through the browser.
4. They leverage webOS platform and device capabilities, for example, notifications, multitasking/background processing, location services, accelerometer.
5. They have acceptable performance and response time on the device; apps with slow UI response or sluggish performance will be rejected.
6. Applications that consume excessive power on the device will also be rejected.