If they are the same size and brand of heat mat, you can plug the t-stat into the wall and a power strip into the t-stat then plug the heat mats into the power bar. HOWEVER, they must absolutely be the same brand and size of UTH, or they won't maintain the same temperature.
They are the same set up and same brand heat mat yes. I just had to get two more digital temp gauges with probes to put the probes directly inside the tank over the hot spot to keep an eye on both temps. I ended up getting the zilla thermostat which was 50 bucks