Is it just me, or are Amy and Donna almost exactly the same? (Read below first)

yeah, I was thinking they are a little bit similar.
but Amy waited for the Doctor 14 years and Donna had some serious issues about herself. also, their family backgrounds are really different
so, I think Amy won't be a second version of Donna

I thought of Amy as a younger version of Donna as there were some similarities.

Well yes and no.
I mean Amy is like you said, red haired, feisty and quick-tempered, like Donna who I love. But I think they have differences as well. And both have met the doctor before going with him but Amy met him when she was a little girl and spent all those years waiting for him to return, nothing mattered more to her than her raggedy doctor. And Donna went looking for him over what two? three? years. I would say that they aren't the same and that we really can't judge Amy yet from seeing her for two episodes. But I really don't think she's going to be another Donna.
:)