Most videos and races I've seen with a 3.8 tuned vs a 2.0T results in the 2.0T winning.
The 3.8's tuned are only pulling around 290-300whp from what I've seen and most stage 2 2.0T's are running 300 whp minimum, some in the area of 320whp. Either way, at the end of the day the 2.0T has more modding potential unless you decide to do forced induction on the 3.8. It gets pretty expensive at that point though (7k-8k).
'13 Genesis 2.0T Becketts Black Pearl - 8 Speed
ISIS o2 Housing | TurboXS Racepipe | Exceladyne Catback Exhaust | Injen SRI | NGK LFR7AIX Iridium IX | BTR Stage-AT Tune | Saikou Michi Dual Catch Cans | TurboXS SML
Avid.1 AV-20 - 18x9.5" +22 x 4 | Front - 255/40/18 | Rear - 275/40/18