This is similar to Earl Weaver's strategy of bringing up pitching prospects in the bullpen.
By the way, Roy Halladay shouldn't be on that list. He was atrocious in 2000, and got sent all the way down to A ball. Randy Johnson made one relief apperance his sophomore season, but made 28 starts.
It's really five out of twenty. This is the clearest example of your extremely poor deduction skills. You took the names of the BEST 20 ACTIVE PITCHERS IN BASEBALL (what an awesome sample to pick from), found a few that were somewhat close to your point, and thought what you said was valid.
Really lazy. Really stupid.
EDIT* I actually agree with the strategy, but this was really poor. Even for Gom.