That's a good question. I feel that doctorofcredit does a pretty good job of information sharing regardless of referral bonus, and the Wyndham cards were in the Best Cards list when the SUBs were higher, and had/have their own review page. However the Wyndham cards are not on "best for gas" page b/c the page is very old and obsolete.
Not sure what sources others may use to find the good cards that don't get as much attention.