Unless Marvel has once again upped Cage's strength, he is a bit behind Bob Parr in this contest. Durability wise, Luke's steel hard skin would seem to give him an edge (though we never really got to see just how tuff Mr. Inc. was... got to be kind of durable). Cage is a street fighter, but Incredible is no slouch... I think Mr Incredible wins 6/10- if he gets in too much trouble, he can always sick Jack-Jack on him.
But maybe it IS time to give the Incredibles a rest against actual comic book characters (unless they are humorous ones like Plastic Man, Great Lake Avengers, Ambush Bug...)
Mr. Incredible was a legit Class 75-100 in the strength department. He was also a very agile and quick strong man.
He was also durable enough to take a bomb blast strong enough to knock a bank vault door off its hinges.
I say the guy could beat Luke Cage 8-9/10
And would give the Thing a run for his money in a fight.