i am trying to compare between 2 line series in Data Chart but not the two have the same data (XAxis Values), so lines separated not be line series any more 

i used comparing example : http://jsfiddle.net/gh/get/jquery/1.9.1/igniteuisamples/jsfiddle-samples/tree/master/EN/HtmlSamples/data-chart/category-series/

and remove data from datasource and displayed the problem please check attached image