As for the lyrics in the verses for 'Fast As I Can' they are bad no doubt and mainly nonsense but they don't make me cringe in the way that the lyrics in 'Black Heart' do. I think it's the killer and assassin stuff, just sounds out of place to me, like it'd fit better in an Iron Maiden song.
In terms of song writing ability between Scott and Chester though it's not even close is it... Scott is responsible for songs like 'Plush', 'Kitchenware & Candybars' and 'Atlanta' and Chester on the other hand penned songs like 'Crawling', 'Numb' and 'What I've Done'. They're obviously completely different songwriters regardless of what songs you choose and I think it's obvious who the more talented writer is by a long shot.
I always thought Black Heart felt right at home as an STP song... Almost like a male counterpart to Hollywood Bitch.
Obviously Scott at his peak was untouchable... But once you start taking the reunion into account, that sort of changes. How many GREAT songs did Scott write after 2008? Circles was good, but it was no Atlanta. S/T felt uninspired, and Art of Anarchy more so, and while Blaster had more passion behind it it was still just really derivative of Scott's influences rather than inspired like his classic material.
So for me with High Rise I never thought 'I wish Scott was singing this' because to be honest, I don't think Scott could have possibly done a better job than Chester did. Chester was, at the very worst, a lateral move in writing and a major step up in performance.
As for Chester's BEST writing, which I feel he never really got the chance to bring to STP with rushed the EP was, he's actually done some pretty damn good stuff once you get past the 'I'm angry and screaming' faze of their early albums.
I've never been an LP fan, but I was stunned when they wrote this song:
https://youtu.be/11iB-v8tAoY. No, not Atlanta by any stretch, but really damn good in my opinion.
Then there's this song here, which was pretty amazing before it was ruined by techno production for his solo album:
[size=78%]https://youtu.be/QpSr65SPzCg[/size]Again, does it stand up to Scott at his peak? No, nothing does. But does anything Scott wrote after the reunion stand up to it? Not in my opinion. And yes, that does kind of make me sad.