OK, since everyone hates the word projection, how about I just say their stuff stinks? None of the five have the stuff to be great major league starters.
I agree with OBM that none of these guys translate into a superstar, at least they are not likely too. However there have been occassions where guys with solid but unspectacular pitches w/ great control have become great pitchers. Greg Maddux is one that comes to mind.