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Since O'Neill is better in the field than his size would give you reason to believe. He may look like the Hulk but he's not just a bodybuilder. Dye was a pretty good athlete who his pretty well, took a few walks, had good power...
Dye's an eminently reasonable comp in theory - his career arc was so weird though, and he never struck out like O'Neill. And Dye was never as good a defender (IIRC) as his athletic skills should have let him be. He was a weird dude.
O'Neill is gonna be a weird dude too though.