IMHO you should be getting far better images than you are. Most superzooms are of (very) questionable image quality. ...

This video should help to inform your decisions. It discusses the difference between huge prints made from images taken with a Canon 5D MkIV and an Olympus E-M1 MkII. Cut to the chase at about 9 minutes if you already know the other stuff.

https://www.youtube.com/watch?v=OGn3yPl59ZM

tl:dr - there is no discernible difference.