So seeing a player play for more time means you're able to make a better judgement of their future ability. Personally I think you can judge someone's level of skill after not very long at all, there aren't that many situations in football that are unusual to the extent that you don't know how a player will deal with it when it happens. The only one I can think of is set pieces, you get the odd secret dead ball specialist that never gets a chance to take one. Do you think there's a possibility that Oviedo might come up with something in a game that we haven't seen before that makes him look like a better player?
So you really don't think players sometimes take time to adapt to a league ?