XAT 2015 was on expected lines, tough as usual. Decision Making and Verbal Ability were both time-consuming. Reasoning was mostly confusing and Quantitative Aptitude was the only saving grace.
It's a common misconception that Decision making hardly needs practice.These questions could be answered just by a thorough reading of the paragraph. I am not saying that this is totally untrue, but one would need ample practice to develop a focused approach for such questions.