Imagine that you have two stacks of wood. One pile of very fine and straight boards, and one pile of knotty and crooked ones.
And imagine that you give these two piles of wood to two woodworkers. You give Alice the knotty and crooked wood, and Bob the nice straight boards.
Both Alice and Bob build tables with their wood. Bob builds a nice table from his nice wood. And from her poor wood, Alice builds a table that's okay. Not as nice as Bob's, but okay.
Who's the better woodworker here, Alice or Bob? Bob's table is nicer, but he started with an advantage. We could argue that though Alice finished "behind" Bob, she came a lot farther and demonstrated more skill. Of course she also had more opportunity to show skill, so we shouldn't jump to the conclusion she's the better woodworker; maybe Bob would do a little better with that crooked wood. The point is that we can't trivially judge based on final results alone, we have to consider starting points.