The Sims 3 will have better graphics, you will be able to explore the whole town without any loading screens, and the Sims personalities are defined by words you choose to allocate them, which will give you the choice to make a lot of different personalities.
YES
Yes you can. you just do the same as you do in the sims 2.
Yes there is a sims 3 for playstation 2 because i got it for Christmas
No They Are Not
You can't there used to be a cheat in sims 2 and it is on sims 3 but there is not the same aspects as sims 2 had sorry.
no you can not run sims 2 expansion packs on the sims 3 i know it would be good if you could but you cant, there is going to be sims 3 expansion packs ( world adventures.etc.)
Same things as in sims 2.
Yes, but you wont have the same characters and neighbourhoods.
im pretty sure...
no, the camera and contolling is the same as the sims 2
No You can have both The Sims 2 and The Sims 3 installed at the same time on your computer if you have enough space to hold all of the games.
No, you cannot have Sims 2 pets on Sims 3. You must have Sims 3 pets for Sims 3 or Sims 2 pets for Sims 2.