actually, not quite. Samsung was not allowed to report how many smartphones were sold in Q2, due to the ongoing lawsuit with Apple.
So we don't actually know how many Samsung phones were sold in Q2. Lets remember that Samsung has multiple smartphone models, and the Galaxy S II is a runaway hit both in Asia and Europe.
Samsung chose not to for "competitive reasons". This could be due to Apple, or it may be because products (e.g. their 10.1 tab) aren't selling as well as they'd hoped.