Yeah, but you have to clear out the startup menu, which you don't have to on Macs.
Yes you can. Just hold down the mouse on a program in the dock and click "Open at Login."
Two things. One, you have to download a program that allows you to search, which you don't on a Mac. Second, the spotlight takes about 1 second to find what you want. MUCH better than with what comes with Windows.
You answered your own question. Since it is an Apple product, of course it will work better on a Mac.
I haven't had ANY problems with my MacBook, unlike every other PC I have owned. Windows just doesn't do it for me, at all.