If the roleplayers like Kleber, Dinwiddie and Bullock are shooting out of their minds like the last round they definitely have a chance, but the problem with the Suns was that they only had one ball-handler who could threaten a defense once Paul wasn't 100%.
With the Warriors you have 3-4, plus a better rim protector in Draymond than anybody on Phoenix, so it'll be tough.
If they can isolate and pound Curry the way they did Paul they could wear him down, but again, Golden State has more ways to alleviate pressure off Curry than Phoenix did with Booker with a less than 100% Paul.