a lot of it is contingent upon weather you're just starting out or weather you're intermediate, advanced, etc. etc.

personally i think a beginner would do better in both areas with sets of 5's. its enough volume for most and the intensity will be a hell of a lot higher than sets of 10.

generally speaking though calories are the key to any bodyweight changes. a beginner can make good gains in both areas if they eat enough....as one advances, more specific types of training will need to be brought into the mix based on the trainees goals but calories will still be the key if bodyweight changes (or NO changes) are desired regardless of the training methods used.
generally, a calorie surplus helps drive progression (a tailwind as madcow puts it) weather you'r training purely for strength or are also looking to pack on some size.

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