What do you guys think about Image Quality of these two cameras? When I compare Fuji X-T30 with EOS RP using dpreview studio scene Image Comparison tool (
https://www.dpreview.com/reviews/fujifilm-x-t30-review/6) RP images look more clear to me. Is it is because of bigger sensor or some other reason? I have no experience of full frame.
A bigger sensor will have an advantage in low light (as it captures more light at the same aperture, and most noise is actually noise in the light). However you can overcome this with faster lenses. Also software applies different amounts of sharpening for different cameras, not helping comparisons.
I'd be tempted to consider what you want to photograph and look at what you might get in each system. I like both cameras but they wouldn't be for me. As I mentioned in my previous post I think Fuji lack lenses with IS and don't have IBIS except in expensive cameras (you can get cheap X-H1 models, but the IBIS isn't that great, and it's large). Also some of their older lenses are quite slow to AF.
I'd find it hard to fault the RP with the 24-105 L, but it's an expensive lens ($1899 as a kit). EF lenses do seem to work well with RF cameras, complete with continuous AF, which you usually don't get adapting lenses between systems. There's a huge market in used EF glass.
Consider budget carefully, also play with cameras (tricky at the moment) to see what feels good. I suspect both will.
Also size:
https://camerasize.com/compact/#815.790,816.422,ha,t
(The 23/2 is probably a better choice, the 27/2.8 even more for me, but I went for the most comparable lenses.)