Btw can i charge my phone while i am playing a game

guys, i have very few bothering questions with me when using galaxy S2....
Can you help me?

1.May i know what Galaxy S2 best of? I mean if an expert or senior user who use S2, how will he perform or transform it into a most high mobile?
2.Is S2 created to beat iphone4? purposely decrease the price to compete?
3. The MOST bothering, I really cant figure out what s2 can do well, besides allow people to change rom? how come the graphic of games in galaxy S2 even worst than an outdated iphone 3G? (honestly im a entertainment based user)

I'm here NOT looking for quarrel but debate or argument against S2 and look for better understanding on S2.
I think i quarrel with members in this post since first day come as I have no idea at all on phone, but after few of them explained with me, I started to accept their opinion.

could you send the apk to my mail?
currently my phone detect my broadband at g connection only
take impossible time to dl