Fairlay still can't be compared to any exchange , cause the majority of times it only has pinnacle prices so you can't really trade since the odds are directly from a book and the spread is relatively high unlike orbit where the odds are different and the spread is lower ( difference between back and lay is usually one cent in orbit , you won't find that in fairlay )
This is usually not a problem for me since I prefer Pinnacle odds(Best odds almost always BTW) and Fairlay is the best way to gain access to Pinnacle odds without having to fill in your KYC which is why it is popular among crypto gamblers.
the only reason I mentioned fairlay is because he wants to use pinnacle and fairlay can solve that , but it can't really replace betfair unless more traders started using it and creating real orders that aren't directly from pinnacle
Betfair odds are pretty good now and then, but their commission is horrible and this is where Fairlay excels with their low commission percentile which is why I prefer Fairlay over Betfair at the moment(Literally pay 0.2256% currently which is basically negligible).