Well, Fords have improved exponentially over the past decade, from the lowly Focus and Mustang V6 to the Taurus. Best example I can think of is the '06-'09 Fusion, which was nice and a very decent car, to the '10+ Fusion, which is just as good if not better than anything else made in that class.
And yes, I've driven several Audis, looked at a lot of them, and a regular non-SHO Taurus with a few options. The point is that at the price of a generic A4 with a couple of options, the SHO is in a completely different performance league while offering a bit more space, competitive interior (it's really quite good), and pretty nice looks (subjective to be sure).
I'm not saying the Audi is a bad car by any means, just that the entry-level A4s don't make a lot of sense to me at the prices they commmand when new, and I make that same criticism of BMW. I love the hell out of a lot of BMWs, but stuff like the 328i is really very expensive for what you get. Of course Audi/BMW are luxury makers, and the badge does get a certain amount of respect.
Ford has truly become a world-class maker, it remains to be seen how long they will be so, but it's impossible for any rational person who has looked at their offerings over time to deny that they've gone from generic crap (think 1970-2000ish), to moderate but forgettable (2000-2005), to pretty solid (2005-2009), to somewhat amazing (2010/2011).