I said 20%-30%
because even though it is not their most relevant market that are left... The sheer (not sure of the spelling) amount of countries left will make a bump....
now it doesn't really matter if launches now or later this year... What they need is a good opportunity to do it.. A simple launch won't be different now or later or at least not by much... They need an event, a big ad campaign and a bait... Like a good bundle with a game or a year of live... Do that when game for gold comes out... And maybe a 50bucks price cut on the bundles..
now you have china also to look after, this could either be a dud or a big hit for MS....
bit done right I'm convinced they can grab sales up to 30% or even more with a big megaton (which is not likely right now).. With a regular launch with nothing special 20% is doable but way harder imo
