function getLevel(selector){
  var q = selector.match(/#[\w\d]+/ig);
  var ids = q?q.length:0;
  q=selector.match(/\.[\w\d]+/ig);
  var classes = q?q.length:0;
  q=selector.match(/[^\.#][\w\d]+/ig);
  var tags =  q?q.length:0;
  return parseInt([ids,classes,tags].join(''));
}

function compare(a,b){
  return getLevel(a)>getLevel(b)?a:b;
}