Facebook win over Orkut in social networking race

Exponential growth of facebook and loosing grounds of orkut recently made me think whats there in the facebook that Google is lacking to offer in orkut? and why reasons orkut failed ? and i found out there are so many reasons out there that really made Google to see decline in this space... you can see the Alexa traffic graph in below pic which shows how the Orkut and facebook are going in opposite direction if this continues Orkut may close its doors one day any way i bet it doesn't happen....

though frankly speaking Orkut is very User friendly and easy to use than facebook there are certain facts that made orkut limited to India and Brazil below are the some of the facts according to me made what the orkut and facebook is today:-

-->Though Orkut was head of facebook in the beginning it failed to provide new features and cool aps that facebook provided

-->The Security feature was more powerful in facebook compared to Orkut

-->Microsoft's Cunning Plan to suppress Google's Domination over internet by heavily Funding(its more like DONATING) Facebook at the right time helped Facebook to get Good data centers, and boost its overall facebook made the big lead in the race

-->Brazilians and Indian's like (Bharath dot com) and Other's notoriously spammed ORKUT which contributed very much in decline of the ORKUT

-->In facebook Everything is tightly integrated in the home page from Messaging, to friends update, invites, tagging photo and many more where as in Orkut everything is loosely coupled which made it less appealing compared to Facebook

-->Facebook Theme look more professional where as Orkut themes are somewhat cartoonish

-->Facebook Aps are Much better than Orkut and another annoying thing where most of the user dont like and google did not refrain by displaying it is ‘Bad Bad Server, no donut for you!' dialogue

Though above points are some of the facts i think which made Facebook to keep orkut on the bay you guys can comment here if you dont agree with any of the points above... what ever it is i say Google Will be back to give a tough challenge to facebook in near future like Arnold in the terminator saying the quote "I'll be back" so facebook play safe.