1.How much of a role does technology play in this very fierce, very competitive environment? (original)

2.How much role does technology play in this very fierce, very competitive environment?

3.To what extent, does technology play a role in this very fierce,very competitive environment?

4.Does technology play much of a role  in this  environment?

5. Does technology play much of a big role in this environment?

#2,#3 , #4 and #5 above are the sentences in question, like this:

Regardless of the improper grammar of #2, what is the difference between the original sentence and #2 in meaning.  Is the #3 correct? (and the placement of the comma.) And also are the #4 and #5 correct?