+1
Without the Spitfire you all would be speaking german today
And also Spits > any US Plane When in doubt, check my sig which is from an US Pilot
Probably the dumbest comment I've ever seen. I'm a Spit fanatic far beyond most anyone here. The Spit XII has been a history project of mine starting in 1980 and I was blessed to count many former Spit XII drivers as friends and spend time with them. I'll stack my Spit XII research up against anyone in the world. That being said, to claim the Spit did it all on it's own, is downright silly.
The Spit was the best Allied short range interceptor of the war. Had it been the be all, end all plane, the Mustang, Jug, etc would not have been. Problem was it lacked the range. It was a problem that never got solved for the Spit, so it was limited to short range penetrations into Europe. The 38s, Jugs and Mustangs could take it further. The Spit was never very effective as a fighter bomber even though it got used that way. As one former Spit XII driver turned XVI fighter bomber driver said to me. Due to the lack of air to air targets, they needed to find something to do with the Spits. He got shot down dive bombing sub pens with 500 pounders. A total waste of time that he still resented. While he was doing that, the Mustangs in particular were shooting down the LW over Germany.
Another Spit XII driver, who shot down JG54 ace Bully Lang, noted in his diary that he would much have preferred to go on Mustangs and get into the fight over Germany. He wrote this in August 44. He'd flown Mustang I's with 26 squadron prior to his time with 41 flying XIIs and then XIVs.
Without US support, England ends up isolated at best and potentially starved into submission. Germany was never in any position to threaten the US. The B of B made that clear enough. They didn't have the long range bombers or fighters to take on the British. Those two nice big oceans made for a nice barrier.
You also assume that US aircraft development wouldn't have had time to kick into high gear anyway.
In the end, I'd suggest some serious history research before you start making statements like that again.