You could check out the comparison on this Canadian website, with lots of additional information: http://snapsort.com/compare/Canon_PowerShot_SX130_IS-vs-Canon_PowerShot_SX210_IS
But it doesn't mention another major difference: The SX130IS is powered by two standard-AA-sized batteries (that's why it is bulkier and heavier than the SX210IS). Maybe you are already using (or considering to use) AA rechargeable batteries for other devices, so that you have got (or want to buy) a charger for them? The best choice would be Sanyo Eneloop rechargeables (or other brands of so-called low-self-discharge batteries), as they keep up the voltage required by digital cameras longer than normal rechargeables, and keep up their power for several months when not in use. In the long run, this is cheaper and eco-friendlier than single-use batteries, and more flexible than the special battery included in most cameras, as you can buy single-use batteries anywhere as an emergency backup.
After all, if the technical data and reviews don't help you to decide, I recommend you to look at both cameras in a shop, to compare in real life how it feels to use them.