If you are just an average writer, but can do a good job with good grammar, correct spelling, do the research required, you can still make it at Hubpages. If you can't spell or write proper English, than Hubpages isn't the place for you.
A lot depends on your reasons for writing here. If you want to make a lot of money, without working hard and learning the ins and outs of online writing, forget it. Money can be earned here if you write about the right topics and you write lots of them.
If you'd like to write for the enjoyment of it, Hubpages is perfect. You get lots of feedback from fellow writers here.