Normally, i stick to the 3 most important qualifications for a good TV:
1. Contrast ratio
2. Colour saturation
3. Resolution
In numbers 1 and 2 the OLED will have the advantage as the panel will deliver deeper blacks and therefore yield better looking colours. On the flip-side the Sony we are talking about is not yer ordinary LED TV. It has a very good contrast ratio and one of the best, if not the best rendition of HDR for its price range...and can almost match the C7 from LG in a bright room setting. OLEDs tend to have a lower peak brightness hence, they work their charms in darker rooms much like the plasma’s of old. Personal taste and picture preference now comes into play but between the 2? I’d go for the Sony...
Good luck.