That all makes sense. It wasn't specific to the Kemper, but it's great that there are settings like amp compression and clarity that sound like they will get what I want.
I never owned a compressor before as I thought they were mainly for clean sounds, and rarely use those, so going to research and try out compressor settings over the weekend.
Before the Kemper I'd have to go out and buy a compressor, and have 17 tabs open with "best compressor on a budget" google searches - tonight I can just load rig manager and demo them after a few clicks!
Thanks for the replies everyone, I appreciate the advice.