Yes because they could not produce enough Exynos chips to keep up with demand. The Qualcomm versions were released because Exynos did not have an LTE radio on the SOC so they had to switch for T-mobile etc
Even so, the 10 million sold were Exynos phones
Not true. Not all the originally announced GS2 phones had Exynos processors, particular those going to Russia, Eastern Europe and other parts of the developing world. This tells me that Samsung's fabs are much smaller than their SoC rivals, not because of demand. Either that or the yields are low. If it was demand then they (most likely) would've either scaled production to meet demand or they would be announcing the building of bigger fabs.
