I wasn't arguing the xFIP leader should automatically win the Cy Young. I was saying Lee isn't head and shoulders above everybody and so, no, we can't just hand him the award yet.
It's definitely harder to get into unfamiliar stats, just as with any new information, and the fan will only get into it up to his level of interest. My wife, for instance, loves baseball but even ERA makes her eyes glaze over. At least, I think it's ERA, though she does nod off whenever I speak.
I particularly like the FanGraphs page on a stat because it gives percentile breakdowns for comparison. If somebody quotes a player's
DRS, I have no intuition of how good a number is, and I need that support. Maybe after months of looking at it it will begin to stick. I've only known about WAR for about four years, and it's only now that I have a good instinctive feeling for why, say, Jose Reyes being over 5.0 is such an achievement.