I think had Ripple not kept an insane amount of XRP for themselves and had found a way to fairly distribute XRP like bitcoin mining does then I would say Ripple does everything Bitcoin does and more.
But Because of this I won't ever rely on XRP to store wealth, at least not for 10-20 years until they are evenly disbursed and opencoin have spent most of their stash.
So bitcoin is still the winner in that sense. And given it only costs like $1 or less in XRP to start benefitting from the Ripple system right now, why not embrace both. You don't need to care about XRP to start using Ripple.