Odds are the percentage gain would be different if they both started on the same page. If you have somebody who invests 10,000 dollars in the end sees and 40% increase, and somebody else who invests 20,000 dollars and increases there profit by 25%, the person with 25% percent still brought in more money in profit. While 53.52% sounds better than 21.46% or paper, the net profit of 21.46 is higher.