To carry on the M:TG analogy, 3E is CONSTRUCTED, while 4E is Limited (DRAFT).
In Constructed, there are tons of cards (options) yet most are complete crap, but the most important part is the pre-game part. Basically, if you practise with your deck beforehand, a professional magic player can tell if they will win or lose (and percentage chance).
Limited on the other hand, I'd say it is closer to a 50/50 split in that your chance of succeeding depends equally on how you build your deck and how you play.
In Constructed, there are tons of cards (options) yet most are complete crap, but the most important part is the pre-game part. Basically, if you practise with your deck beforehand, a professional magic player can tell if they will win or lose (and percentage chance).
Limited on the other hand, I'd say it is closer to a 50/50 split in that your chance of succeeding depends equally on how you build your deck and how you play.