GrauGeist
Generalfeldmarschall zur Luftschiff Abteilung
A "wonder weapon" would certainly be a "game changer"...but if we put WW2 into your context, every other day saw a "wonder weapon" when they issued the next mark of the Spitfire, or upgunned a B-25 or issued semi-automatic carbines instead of bolt-action rifles.I suppose it depends on whose definition of "wonder deapon" we are using. I have my own and everyone else doubtless has theirs. I think o the proverbial wonder weapon as a "game changer," and tehre most certaily WERE a few of those.
There is a considerable difference between a person's opinion and actual circumstances.
On the battle field, the introduction of the bow arrow was a "wonder weapon" because it all of a sudden allowed an army the ability to stand off and engage the enemy, however, as fearsome as it was, the longbow was only a technological leap foreward in the bow arrow's evolution. Just because the longbow gave the archers a tremendous advantage over the standard archers does not make it a "wonder weapon", it makes it a new threat to be countered. And the countermeasure for the longbow was...black powder, which was a "wonder weapon".