Well not really, if you tuned the 1.8T to 300bhp you are gonna have to spend big money on it. Unless you want it to blow up in a couple of weeks. The turbo car will never be as good as a v6.
The v6 has 204bhp as standard, thats without exhaust,filter,cams,chip etc.
Plus for a couple of grand you will be able to put a supercharger on the v6, big power and not a lot of loss in reliability.