Snowydude: What 4 win-cons do you speak of? What percentage of game wins go to Tinker-Bot?
In terms of Pulverize, yeah, great card, but 2 mountains is nigh impossible. Also depends on meta, artifact decks have dropped off a bit percentage wise, with current Eldrazi builds being a current flavor. Hurkyl's, Rebuild are useful in multiple ways, where Pulverize is a nuke for primarily a single deck type.
Key for Storm has always been utility, i.e. a Swiss Army knife is preferable over a scalpel.