All these calculation methods have some error ratio and the value of this ratio increases if you use the wrong method for the wrong location, as each method works best with a specific location.
For example then Umm al-Qura method works best in the Arabic peninsula in other places this method may give you prayer beginning times that are either too early (which is definitely bad) or too late (which might be good if you don't wait till the end time of a prayer to pray).
For more details see Figuring out right calculation method of prayer time