Well for status quo the POD has to be in 1914. By the time the Russians retreated across poland there was little chance of a status quo in the east unless the west collapses, which means no status quo.
If it does somehow happen there still winners and loosers.
Great Britain - Winner, kept the balance of power in Europe (for however a short period)
Germany - Neutral, While proving itself a world power, it could not overwhelm France and could not claim European Hegemony. It now has to deal with the massive issues facing the nation which were put on hold by the war.
France - Looser, Could not reclaim its position as the dominant european nation, did not rectify the losses of the Franco-Prussian war. The people of France will see this as the Second defeat in half a century. May go extremist.
Austria-Hungary - Loser, Ever growing dependence on Germany, Nationalist movements across the nation, and the Austro-Hungarian treaty is coming up soon.
Russia - Looser/winner, The failures of the state become apparent, the tide of revolution cannot be halted however, in this scenario it may be more likely that a democratic government takes hold.
Ottoman Empire - Big Winner, probably the best situation that could happen for them. Without the war the arab revolts can be put down, the junta will fall and a more democratic government will likely arise. As oil money starts coming in the Nation will become wealthy and will provide a much more advanced and stable middle east (likely first world)