Below from Paul Krugman's blog:
"Credit where credit (line) is due: the G20 outcome was better than I expected, with something substantive and important emerging — namely, much bigger funding for international financial institutions (IFIs), plus expanded trade credit. This will help smaller, currency-crisis countries a lot.
A turning point? No. But realistically, most big-time international meetings produce nothing; this did something significant."
My own opinion: unfortunately I think we needed a turning point.