I've been on android since the g1 and the gs2 was not sold on Verizon and it took forever to come to the states and it was sold as different names on different carriers and did not get the same name across the board. Everyone on Verizon wanted a gs2 so bad but did not want to leave and lose there unlimited data so we waited for the galaxy nexus and it was an exclusive phone just for Verizon for like the first 6 months.
I don't understand your point at all as the gs2 blew the doors off of any other android and Samsung made a pure bread android phone right after it.
From a quick Google search the galaxy s and s2 broke 50 million last June of 2012
Combined, after multiple years on the market.
I'm saying Samsung likely (even with their spot as top Android OEM) wasn't in the position of strength they are now.
With the HUGE popularity of the GS3, they've become rockstars. The MAIN competition to Apple (as far as one-to-one phone sales go). The ONLY Android OEM that's been able to go toe-to-toe with Apple as far as one-to-one sales.....
My point is simply Samsung now likely feels like they are in the driver's seat. Sure a popular GS2 gave them confidence. But the explosion of popularity after the GS3 has brought that to a new level.
Let me ask you this.....with Samsung being as popular as they are, and Google likely wanting the Nexus program to flourish, if Samsung was so interested in releasing something like a Vanilla Android Galaxy S4, why has Google used LG? Why not let Samsung continue to make Nexus phones?
Do you not think a part of it has to do with Samsung saying "Nah we're worth more than that" and asking for more/wanting more control of that relationship? Don't you think that likely happened in the last year, year and a half?
If you think Samsung is the same company now as they were when the GS or GS2 came out, you're kidding yourself.
EDIT: From a quick google search - the GS2 wasn't even the top selling SAMSUNG phone in 2011, let alone Android. Samsung was the top OVERALL Android OEM (behind Nokia overall), but the GS2 only sold a little over 10 million in 2011, behind the HTC Desire (13 million) and Galaxy Y (15 million).
2012 and the GS3 was when Samsung erupted. 55 million GS3's in 2012 (compared with 52.3million iPhone 5's - granted it was out much later, but nevertheless, Samsung had never come close to Apple like this).