Discounting the credibility of a source (audiworld) because someone once said something silly or wrong on there at some time or other pretty much voids any information; fact or opinion, that has ever, or will ever be posted on any forum anywhere
They may be stupid americans for the most part but then its not their fault you misinterpreted the 0-100% as being a rear driven range - which while is lovely for going sideways is not a goal set when looking to achieve maximum grip.
Erm, I did NOT misinterpret their 100% claim!

And sure, on all forums, you get the odd muppet, I think you'll find that on most UK forums, we also have enough people with intelligence to sort the wheat from the chaff. How do you explain AudiWorlds FSI/S4 claim - it certainly wasn't from any official press release from Audi (which AudiWorld
claim to use), and nor is it from lifting any S4 bonnets - sorry "hoods".

Torsen (although lets call it quattro from now on, because that is the name it deserves from the rally heritage regardless of what audi marketing reps want to stick badges on) just doesn't have the diversity, precision, timing or even close to the range of input or output you get with haldex which some people find 'twitchy' and others find just perfect.
Now you are just avoiding a question I posed. Please tell me how the Haldex disengages drive from the front axle? I does NOT - which means that the R32/TT/A3/S3 Haldex system can ONLY go from (front:rear, in case of any doubt) 100:0 to 50:50 (a 50% variation, in one direction only). How can that be better than the current Torsen range of 80:20 to 0:100 (an 80% variation, in BOTH directions)

What about the fact that Haldex completely disengages for braking, thereby not utilising the rear axle to assist with engine braking?
Sorry, but Haldex does NOT have the traction range, nor the engine braking abilities has Torsen. Yes, you can alter the behaviour of the Haldex to be more proactive, and even have it set "on" all the while. But to do the latter, and you then loose ABS on the rears (not good, because modern ABS also controls the brake bias). And you can NEVER (on a front engined car) set a Haldex up to give 100% (or anything above 50% to the rear axle).
Yes quattro is fine, but haldex is better (hence my point quoting the R32 is faster around the topgear track than an S4 despite the power/weight disadvantage. Not hugely scientific, but real world and tangible) and I'm afraid it's only a matter of time before the archaic technology is lost in the motoring history archives forever.
Got a link to the TopGear stuff?
And do I presume you work somewhere near Ingoldstadt or Nekarsulm (or however they are spelt! :embarassed:) - because I don't think that the engineers at Audi AG or quattro GmbH would agree about the the Torsen being "archaic", nor do all the other completely separate OEM manufacturers who use Torsen.
BTW, what is your opinion on Quaiffe diffs, being as this is a Golf forum, before we all go massively OT.