Is there really any reason to have the Diner's Club now that Chase Sapphire is offering primary rental car coverage? Has anyone compared the two programs' primary coverage, the exclusions, and determined that Diner's Club's coverage is superior?

I have no need for another $95 mastercard, if they're not offering retention bonus, their earning rate is inferior, the bonuses are ho-hum and now I can get the same primary rental car coverage with Sapphire----- but is it the same?

Anyone know for sure?