A55 vs A580?

I am getting ready to upgrade to either an A55 or A580. I am most likely going to choose the A55.
What is the real difference between them?
All I can find are:

1. SLR vs SLT
2. Different LCD screens
3. EVF vs OVF
4. A55 smaller than A580
5. 7fps vs 10fps
6. A55 has higher ISO by one step

I see many people saying how good each camera is and sometime how one is better that the other, but is it real only about preference of size and EVF/OVF? They take the same quality right? it is the same sensor.

I am buying the A55 soon so I want to make sure about the differences.