I'd say Hughes has been more than just "average."
Personally, I'd put Gibson in the "good" category. He is young, in his first full season, and still has a good deal of upside. He's certainly had some stinker games, but that's to be expected here and there. Even the best pitchers have bad games. I know it's easy to say, "when he's on he's really been good", because that's a very arbitrary comment that can be said of most pitchers. Still, the truth is, when he HAS been on, he's shown flashes of near dominance at times. Based on his age, stuff, potential, I think he rates above average at this point. And I know there is debate as to whether WINS truly exemplifies the quality of a pitcher's performance, however, they are supposed to pitch well enough for their team to actually win, aren't they? And don't wins, or more to the point, having a winning record, mean maybe a little more as a measuring stick when playing for a losing record team?
I'm a bit torn on Nolasco, mostly because I'm not overly familiar with him, never having really followed him, or the Marlins, previously. I've looked at his numbers, and I've read variable reports on the type of pitcher, and various opinions of his quality/worth. Up until this season, he has been reliable to take the mound and eat innings. And that is a good thing. Some feel being able to "eat innings" means you can't win, but can toss a lot of in vs in a losing effort simply to save the bullpen for another day. But it doesn't. It means you are reliable to take the mound, and usually pitch well enough to keep your team in the game, and don't shoot all your bullets in 5 innings. I see nothing dominate in Nolasco's stats, but I do see a winning career mark despite pitching for some pretty bad Marlins teams. I see more hits than I'd like, and a BA against higher than I'd like, but a decent Whip and a good SO/BB ratio.
Despite a lost season, magnified all the more being his first with the Twins after a nice FA contract, I think we have to do a better job of separating disappointment with past career reality and potential for 2015 and beyond. None of these 3 guys are in the true #1 category, though considering age and potential still not met, Hughes has the potential to at least come close. Point is, I think these 3 are a very good place to start in building a rotation.
Could the Twins add another high quality arm this next offseason via trade or FA, yes. Do they have the finances to do so, and the marketable prospects if they go the trade route, again yes. Do I think the Twins should continue to horde as many quality prospects as possible for at least another year and then maybe make a big move somewhere? Again, yes. In no way would I be upset or disappointed if the Twins made some move for a high quality starter to add to the rotation. But...with May getting his feet wet, Meyer a little behind him, Milone and Pelfrey as a couple fall back/temp options, and Berrios possibly ready at some point in 2015, I just wonder if it's a prudent move to make for a team getting younger and rebuilding.