It all depends upon the news server that you are connecting to. These days, people have such fast connections at home that it's not all that hard to overwhelm the server on the other end. And companies like Comcast do use Speedburst technology, which is why your test came back at 38megabits per second. But over a file of any size..you wouldn't sustain that bandwidth.
I don't think 3 megabytes per second is anything to complain about.