Skulker, your attempt at humor is understandable, if only in a locker-room-banter sort of way.
proper exposure what is that?
Just one of the basics of photography.
If you are not to sure about this there are many "photography for beginners " type articles on the Web. You could start by trying to understand them.
Your lack of understanding is probably why you can't take a decent photo. I never get the sort of noise in my photos that you get with your canons. Your last comparison showed crazy amount ts of noise and banding etc in the Canon shot and a hopeless soft nikon image. So may be you don't understand focus either and that's why you put up such rubbish shots from both you cameras.
If you have been around long enough to know the poster's true credentials you might realize that sort of comment is better kept to yourself, despite the cute emoticons.
Seriously. There's far too much low-level insult thrown about in the guise of humor instead of intelligent discourse in these contentious topics. Frankly, IMO, I find far too much of a potentially good thread is often taken up by off-topic and unconstructive posts with an inflammatory tone, making it tedious for those who want to follow it without the playground antics and making it more difficult for those such remarks are directed at to remain civil and engaged.
I hope you won't join the ranks of the rancourous on a regular basis.