I'll reply to both your posts in one, by Wikipedia, the Allies produced 786,500 a/c whilst losing to all causes as far as I can tell, ~243,600 which is the U.S, U.K. and U.S.S.R. losses combined.
Hardly over half, in fact, one might say "one third" of all production was lost.
~786,500 Allied production (
per Wiki)
- ~243,600 Allied losses (
per Wiki)
-------------
~542,900
========
Mustang overrated? You need to do some serious research, I suggest you contact a forum member named drgondog, he has accurate figures for what 8 FC accomplished, and it wasn't against a worn out and outnumbered LW. In fact, when electing to do so, the LW directors could mass fighters and strike at a point of his choosing in the bomber stream and overwhelm the local Mustang escort. I suggest you read some after action reports -->
HERE and find out how many times P-51's (and Thunderbolts) were out numbered sometimes as high as 50+ to 8. See this particular report from
Col. Goodson. And no I didn't cherry pick an encounter report, I just clicked on one of Col. Goodson's at random.
You seem a fairly genial type of guy, if you're going to make blanket statements here, have solid data to back up your claims. In fact, ask here first, wiki is hardly the A number 1 resource but there are guys here that will dazzle you with the amount of knowledge and data they not only have but are willing to share freely, even happily to fellow enthusiasts and scholars alike.
Cheers.