Heh.. except its a twin turbo system, meaning one turbo for lower rpm range and one for higher --AKA no lag.
Also, that thing spanked a 7.3L V12 Pagani Zonda as seen on Top Gear:
XJ220 weight/hp = 1372 kg/542 hp
http://en.wikipedia.org/wiki/Jaguar_xj220
Pagani Zonda weight/hp = 1230 kg/594 hp
http://en.wikipedia.org/wiki/Pagani_Zonda
V12 Vanquish weight/hp = 1835 kg/453 hp
http://en.wikipedia.org/wiki/V12_Vanquish
V12 Vantage weight/hp = 1680 kg/510 hp
http://www.supercars.net/cars/4379.html
V12 Vanquish S weight/hp = 1875 kg/520 hp
http://www.supercars.net/cars/3005.html
So clearly, if it made quick work of the lightest and most powerful car of the group, your Aston Martins would be mincemeat. Now if we put any of those engines in say, JLee's car.. that would be fun
Don't get me wrong, I'm not saying Astons are not nice cars.. they are incredible, I would just rather have the lesser known/more rare/faster Jaguar.
On a side note, its funny that Astons pop up in a ford thread, up until 07' they were fords haha.