Obviously yoga and pilates are gentler (and thus less dramatic in their results), but for me it comes down to a question of what's sustainable for me. For what

Obviously yoga and pilates are gentler (and thus less dramatic in their results), but for me it comes down to a question of what's sustainable for me. For whatever reason, I'm far more comfortable and excited to spend several hours a week doing pilates than weightlifting, so I think I see a better result (because I would find excuses not to do weightlifting). Not that they have to be substitutes for one another, either.