2 is not == true, but !!2 is true

In other languages that shouldn't be equal either though, right?

Maybe you meant

if (2){
console.log("nonzero ints are truthy")
}
else {
console.log("no they're not")
}

Which would output

nonzero ints are truthy

and that would actually work in all languages I know. But that's different from being equal.