Nathaniel Lowe had a good xwOBA and a lot of red statcast numbers his big year too! Unsustainable doesn't have to be lucky or undeserved. Rooker is flirting with the highest single season BABIP since the pandemic, and that's not a leaderboard that has much in the way of repeat names, especially not those with as much swing and miss as he has. I generally think Cruz is a better pure hitter, but comparing to Nelson at similar ages might actually be a good barometer. He had one outlier BABIP season in Texas with a 147 wRC+, but was otherwise a 115-120 guy until his mid-30s. Maybe Rooker is a 140 guy now, it's not an idea that's completely without merit, but I think the smart money is that he's more of a good hitter having an incredible season that won't repeat for various reasons(age, unsustainable BIP, etc).