If you don't know about how a camera works, or don't know much about photography, there's really no reason to complain about megapixel count.
The more pixels you have in the sensor, the more light you're going to need for a good image. The less pixels, the less light you need.
The only thing more megapixels affords you is a larger image, so unless you're planning on printing to billboards or large posters, you really have very very very very little to worry about.
A smaller megapixel count also affords you a smaller file size, eating up your internal storage more slowly.
Lots of high end canons and nikons keep megapixel count the same year after year while they improve the sensors. There's so. much. more. to a camera than the megapixel count, and there's really no reason at all the common consumer could EVER make proper use of more than 8mp.
So please, don't succumb to the marketing megapixel my penis is bigger than yours race and think that apple has fallen behind. By keeping MP count the same but improving the sensor and lens, they've done their customers a great service.