> The defeat of Germany came because the Luftwaffe was defeated.
It was a lot more complex than that. Lots of factors were in play, including introduction of combined-arms warfare that included aircraft but more significantly the tank. More generally, see the Hundred Days Offensive [0]
I'll stand by what I wrote, because although the airplanes of the day were ineffective at attack, they were extremely effective at reconnaissance which showed where to put your firepower.
My understanding of the WW1 tank was it showed promise but was not decisive.
It was a lot more complex than that. Lots of factors were in play, including introduction of combined-arms warfare that included aircraft but more significantly the tank. More generally, see the Hundred Days Offensive [0]
[0] https://en.wikipedia.org/wiki/Hundred_Days_Offensive