A bit off-topic, but it's TWR related...:
The crew of DM-2 said that the Falcon 9 felt very gentle on lift-off compared to STS (makes sense, because Falcon has no SRBs), but once stage 2 kicked in, the ride was rougher compared to STS after the SRBs detached.
Probably because Falcon 9 stage 2 has a huge engine (compared to other second stages) and is pretty small (less mass to absorb vibrations).
So yeah, that popped into my head when I saw BenjaSFS☆☆☆'s rocket and your reply.