Come guys, are there any wizards around?
None of us can tell for sure whether the Me 262 could have turned the odds of the war in favor of Germany had it been deployed in significant numbers, say, by the beginning of 1944.
Let´s think Hitler and some of those bureacrats of the Reich did not order ludicruous requirements such as making a dive bomber out of the Me 262 and that they did not obstruct developing of new projects at the early stages of the war and the Luftwaffe has a fleet of 500 operational jets in service as of January 1st, 1944.
Losses of heavy bombers were high for the USAAF throughout 1944. The jets entered service in limited numbers and kind of too late, still they proved their worth.
(i) 500 operational jets in early 1944 could have certainly contributed to an even higher casualty rate in the USAAF, diminishing the amount of damage to German industry and communication networks: more tanks, artillery and aircraft are therefore produced.
(ii) Even more escort fighters are required to protect the bomber boxes, perhaps diminishing to some degree the free sweeps of fighter-bombers harrasing movement of German ground forces. The armament produced in accordance with point (i) reaches front lines faster and in far better shape.
(iii) Do not forget the USA, despite its large population, was not the USSR. The government of the USA did not have, at all, the contempt and scorn for human life as it was with the bolsheviks. Losses were high for the USAAF; an even higher loss rate would have brought consequences hard to assess in the USA.
(iv) Protracting the war for a reasonable period of time (what is reasonable? 1 and a half year?) plays in favor of Germany. Protracting the war means Germany continues to be capable of waging a war and that the enemy armies are still perhaps reasonably far from its borders. Who knows...perhaps London continues to receive rains of V-2s.
The Me262 by itself could perhaps not win the war; it is even ridiculous to think of such an option. But the indirect effect of a far more significant deployment of the jets at the right phase of the war, who knows, could have brought consequences of relevant magnitude, and the outcome of the final battle should be one withheld.