I am using following code to test two table column values. only issue is how to convert .colNameivr values to upper case before matching with itemNames.
jQuery('.colNametns').each(function(i) {
var itemName = jQuery(this).text().toUpperCase();     //1
var match = jQuery('.colNameivr:contains("' + itemName + '")');  //2
  if(!match.length){
      jQuery(this).toggleClass('red');
      counter = i;
  }
if(match.length){
     alert(i+"--"+itemName );
    callme1(itemName);
  }          
 });
example here - http://jsfiddle.net/w7akB/53/
in above example -countryCode should not highlight as string is same.
 
    