You said they had similar power, and in the very next sentence you said the Camaro needs the power of a V8. You don't see that as a contradiction?
Also, if you've every had a turbo vehichle then you know you are just one tune away for lots more power. So, if they start out at similar power, then you will get more power per mod buck for the turbo engine.
Finally, when did you even mention sound? V8 sound and a couple of bucks will get you a cup off coffee at Starbucks. You can enjoy that as you watch the tuned TT's tail light disapear into the distance.
EFR Twin Turbo LFX-GPI Tune-ZL1 fuel pump-10:1 CR forged pistons-3.45 gear-Meth Injection-BMR Trailing Arms, Bushings & Sway Bars-CircleD 4000 Stall-GPI Fuel Enrichment System
647 RWHP & 726 RWTQ @18.5 psi on 93 Octane (locked converter)
1/8 mile -- 7.158 @ 102.10 (20psi); old build