and add in that it takes a little while to spool up those twin turbos, and the Gen 1 also sounds better at low rpm and makes a crap ton of torque at a low rpm. I hate the exhaust sound on the Gen 2 Raptor. Ford messed up on that one, it should sound more like a GTR or Ford GT than a pissed off bumble bee trying to be a v8?
Of course that is just my opinion.
The 6.2 ain't a diesel, nor is it even a 7.3 gas. Sound is subjective, everyone has their opinion. As stated earlier, the 3.5 HO makes more torque and at a lower engine speed than the 6.2. It does not "take a while" to spool the turbos whatsoever; we're not talking about some riceboy Supra with a massive diesel size single turbo that needs 5,000 RPM to spool. The Gen II 3.5 will spool it's twin turbos well before 2,000RPM and hit a peak torque of 510 lb/ft before the 6.2 can even reach 434.