Of course the Cavs have a chance. They won last year and did really well the year before without Love and Irving.
Look at it this way. LeBron, Irving and Love and equal or better the output of Durant, Curry and Green. The wild card is who can stop Thompson and how the benches play. If JR Smith can show up and play defense then they have a chance. And if Korver and Williams can contribute off the bench to equal the Warriors bench it's be close.
Kerr being out also has an impact as Brown isn't as good a coach. Green is also a wild card as he's likely to do something stupid AGAIN and get ejected.
Throw in Green being his typical a$$hole self and sabotaging the team and LeBron playing on pure hate then the Cavs can win for sure.