I didn't mean to pair them as a comment on Strasburg. The Dalkowski article had nothing to do with Strasburg but was linked from one of the articles about how fast the kid can throw. I only passed that stuff on because it was fascinating.
If Strasburg falters, it will almost certainly be a matter of mechanics/injury. His control is good.
This article, for example has a scout rating the four aspects of Straburg's mechanics as very bad, average-to-bad, good, and very bad.