The average newbie will not need to shoot 12MP pictures. The average newbie will not take any better pictures with a 1200 dollar lens. The average newbie will not snap better shots with a higher tier camera period.
The average newbie does not yet know the true meaning of megapixels. The average newbie knows only what the marketing says, and that is more megapixels equal better pictures.
The average newbie only understands that better equipment means better photos which those into this hobby understands that is not the case.
The average newbie knows nothing about photography. Most just want better pictures of their kid's birthdays and think that the more you spend, the better the kid's birthday party pictures will be.
I have a $200 Fuji non-dSLR camera. I am only 2.5 months into this hobby and don't plan on taking it to the extreme that many others do. I want better photos and want to do more than the kid's birthdays, but I am not so engrossed that I have to go out specifically shooting for the hobby.
In the summers, we take the kids to many places on day trips. I will be interested in the hobby side of photography while I am at these places as well as family shots when there. I am on this forum and another seeking knowledge of photography to improve those photos I wish to take with my $200 camera. I am visiting every recommended link that someone posts here to gain knowledge of how a camera works, how to compose better photos, and photography in general.
A buddy of mine bought a camera the same time I did. He wants better snapshots of his kids. He spent $1500 on a kit on e-bay for an XTi. He claims his photos are fantastic because the camera does everything for him. He shoots in automatic mode only. He thinks it is great.
His photos are simply snapshots of his kids. No thought of composition, no thought of exposure, no thought of creativity. They are taken full automatic with $1500 worth of camera equipment. His camera is better than mine because of what it costs and the fact that his is 10 mp and mine is only 7 mp. His thoughts, not mine.
I take snapshots of my kids as well with my $200 camera. I also take photographs and think about exposure, think about composition, and think about creativity. No, I understand that I am not very good about it, but I do think about these things when I turn the camera on. I do know that, my photos with my $200 "only 7 mp" camera are much better than his $1500 "it's 10 mp!" camera.