I need only look at the ratio of aircraft and the Martin van Creveld's citation to come to the conclusion the best the Soviets could get is a draw.
That ratio of aircraft doesn't necessarily preclude the Soviets managing to achieve notable successes, as even an outnumbered air force can maneuver it's forces to achieve local air superiority for a given timeframe so long as the numerical gap and/or skill gap isn't too wide, which it isn't in this case. And I already pointed out the problem with the Van Crewald citation, with the lack of any causative link. That said, I don't rule out the possibility of a draw or even the WAllies managing to achieve what they envisioned in the initial Operation Unthinkable*, albeit at a steep price. I just don't view it as a particularly likely outcome, particularly with a political shitstorm exploding back home and the prospect of their armies mutinying out from under them.
*That is, the Danzig-Breslau line. Even though oddly enough this still leaves most of pre-war Poland, all of Czechoslovakia, and all of the Balkans, in Soviet hands.
I'm fully content to say, based on our previous exchange, there would be no decisive breakthrough initially on the part of the Anglo-Americans until the arrival of atomic weapons in theater to destroy the Soviet bridgeheads in Poland.
You mean the rail lines. Soviet railheads by this point would be located well within East Germany. Although the damage done to Hiroshima and Nagasaki's railnets by the atomic bombs were quite limited. Then again, their rail centers were not particularly close to the blast zones. Then again, the data from those drops (mainly the Nagasaki one) shows that a miss on the level of the one at Nagasaki would leave rail centers relatively intact. Not to mention the possibility of the bomber just flat out getting shot down. So... fates of war there, I guess.
Less so is the problem that the WAllies will have to endure months of bloodshed and political chaos while they set-up the bomb sites in Britain, transfer over the 509th, and then bring in the bomb components itself.
I see that this is morphing into another debate about whether the Western Allies or Soviets would have come out ahead should War have broken out between the two factions in the middle of 1945, which is not exactly off-topic, but the question here is whether Unthinkable, regardless of how destructive you think that it would have been in and of itself, would have been more or less destructive than Downfall.
I mean, in Central Europe, we're talking about massive battles being raged with gobs of artillery and armor and air power on both sides. In Kyushu, it's a huge mechanized amphibious assault force landing against a admittedly large and well dug in force, but one whose morale by that point would be unknown since they exist within a state threatening to possibly collapse and speeding towards a catastrophic famine. The former is guaranteed to be apocalyptically bloody. The latter could be anywhere from apocalyptically bloody to a total cakewalk.
1945 is not 1949 and even that article states the Schnez-Truppe was too small to amount to a meaningful force. It's actually pretty delusional all said, given that American forces in Europe didn't even have enough tanks to fully outfit their own local forces in 1949, never mind an additional four armored divisions. That said, the big stumbling block in 1945 is really an organizational one. Jonathan Walker in Churchill's Third World War examines how the British planners rather underestimated the difficulties in assembling the German forces they wanted, noting that the German Army following it's surrender was "very fragmented" as a result of the dispersal of PoWs and that the need to rearm, retrain, and refield the forces would consume considerably more time then the planners anticipated. Even with their underestimation, the planners did not expect any of the German formations to be ready by July, much less