"Fall on their face"? WTF are you smoking?
You mean kinda like this stock 2013 GT500 with a little-bitty 2.3 TVS? Yea, falling on it's face making peak horsepower at 7000 rpm.
Or maybe this 07 GT500? With the power still climbing at 6300 rpm with a Kenne Bell AND the Eaton?
Or maybe the countless 03/04 Cobras that make power to over 6500 rpm on a stock blower?
Heck, even my car with a non-intercooled M112 on 2-valve heads made peak power at over 6200 rpm, and only fell off about 20 horsepower up to 6500 rpm (where we stopped the pull). This whole "running out of breath" is a complete myth, or more accurately, an outright lie. You can argue about dyno numbers all day long (and if you knew me well, you'd know that I HATE dyno racing), but you can't simply ignore one car making TWICE (or sometimes even more) the power of another car across a significant amount of the powerband.
Just because your centrifugal blower pulls harder up top in the rpm range than it does in the lower rpm range (i.e. "pulls like a freight train up top", or "it never feels like it'll stop pulling on the highway") doesn't mean that it pulls harder up top than a positive displacement blower does. Has it ever crossed your mind that a positive displacement blower pulls just as hard up top, except it also pulls better down low? I hate to break it to you, but in the vast majority of street car cases (where we don't have a motor set up to only make power from 5000-8000 rpm), that is EXACTLY the case.
I hope I made it clear earlier that I'm trolling a little bit.....but at the same time, I'm not. I hear some of these pro-centri arguments, and how they can sometimes be mis-represented a little bit, and would like to clear it up for anyone reading in the future (or now) who may not know any better.
Also, the 'seeing things at local track'. I agree with your main point, but a discrepancy in track experience (and car experience in general) should be taken into account. I don't know about these other guys, maybe their John Force's sons for all I know. But I've been racing for the better part of a decade now, with upwards of 1000 passes on my car. I've seen a lot of REAL racing at the track, with REAL setups, REAL drivers, REAL errors made, and REAL defficiencies in a given platform. You've really got to look out for the 'internet warrior' who pays someone else to build them a dyno queen, without having any serious track, racing, or wrench-turning experience. I'm not suggesting anyone here fits that profile, but I see that profile of person A LOT online, and they almost invariably give bad performance advice online. It's these people, combined with my personal experience, that'll I'll argue with folks online about things like centri vs. PD, 3.73s vs. 4.10s, modded
suspension or not, etc.