Say he's raising a really tight range - AJ+, 88+ only, and he's calling a shove with AQss, AK and TT+ (seems a likely range). That means he's folding half the time and we increase our stack by 25%. When called we're 44% vs his calling range.
Its a really simple shove even if he's raising really tight. Throw in some KQs, KJss, AT, smaller pairs and its even more of a no brainer.
yeh but he makes it less with the weaker part of his range and bigger wiht the bigger hands or so we assume.