Why Sixto Sanchez is Still Nowhere Close to Helping Marlins

What were the results of his twenty pitches? Apparently he fanned Arraez and Hostetler. Did he walk anyone? Did he give up any hits? All eyes were on him but not much information was conveyed.

The consensus seems to be that Sixto is no longer a major league pitcher. Why is that? At 92-94 mph with his heater and a nasty change, he seems to be at least on par with most major league pitchers. Seems to me that he only sucks because he's being compared to himself a few years ago. Fact is, no starting pitcher stays at 97 mph for long.