The GT220M is most likely weaker than the desktop GT220, which in turn performs between a 9400GT and 9500GT (both of which are non-gaming card)
You might be able to play most those games on low/medium. Assassins creed with medium/med-high.
Also, FarCry2 and GTA4 are very CPU intensive. You can get away with 30fps in FaryCry2 with a 2.0GHz mobile P2D, but not GTA4. Even with lowered resolutions/settings, GTA4 is a horribly coded console port that will make your fps unplayable without a powerful cpu.
At harvey norman it's marked as simply Dual core not Core2Duo.
And which is better ?
Nowadays, the vast majority of PentiumDualCores and Core2Duos use the same architecture. The only difference is Core2Duos have more cache, giving them an edge in certain situations and at the same clock speed.