One of them is a 26 year old SP, in his third pro season, who is making the step from good to great after 80 starts (most pitchers see their biggest jump between starts 40-70). His K/9 is up, his BB/9 is down, and while his current W total is unsustainable, he's stepping up into elite SP status that most expected of him. The other is bucking 3 years of significant decline in his mid-late 30s. Maybe the healthy knee/weight loss is the difference that will help him get back to pre 2006 level for the full year.
The fluke this year is the continued great stats of Zack Greinke without any positive results.
Ubaldo Jiminez, from his first six starts, is pitching as if he's the best pitcher of all time. He isn't. I have no doubt that he will have a very good season, possibly a Cy Young winning season. That will be accomplished, however, with him pitching a level not near where he's pitching now. He's going to lose games and give up home runs, neither of which he's done in the first six games.
I also have no doubt that Livan will end the season with substantially worse than he is now.
But my larger point is that this "writer" would never make a statement that what Jiminez is doing right now, 6-0, 20+ innings giving up one run, a no-hitter, zero home runs given up, blah blah, blah, is a fluke. That doesn't mean he's not very good, just not that good.