Oh, thanks for the info about the torch. I had forgot what "torch" means ;-) As for the comparisson you want, i will post you the link to the engine manual of the 20v to see the indivative plot.
As for the ppl saying that they prefer 10v because of its more usable "low" power, i think its crap to justify their desision. 10v is more powerful than 20v until 3000 rpm. After 3000 20v takes lead. Will you really take advantage of the more power of the 10v till 3000rpm? It's like saying you like driving at 2500 rpm.
As far as your chipped car is concerned, you must be higher than a stock 20v at all range, exept the high peak for a couple of horses maybe. You must perform better at all tests against a stock 20v with MAYBE the exception of the top speed for a couple of miles again...