I actually prefer Agoura’s amp models outside the Superlead, which Fractal takes hands down. There could be other exceptions as more Agoura amps arrive. I also wouldn't say that I prefer L6 effects, as I think Fractal can achieve results I may prefer in several cases.
What L6 does REALLY well is hand me a space echo on a platter locked to tempo when I’m inspired and need a space echo to get the idea happening with as few hurdles as possible. That’s not to disparage Fractal in any way. I sincerely enjoy the AM4, and I appreciate the additional depth they expose. It’s more of a workflow thing than a quality thing. I’d love it if there was a lower barrier of entry to get something like the space echo happening on the Fractal side. I had to read half a wiki and like 10 threads to that’s to get traction. Nonetheless, once I figure it out, I’m sure I can save it as a favorite or something to make recall easier.