It really depends but generally speaking just because of the mechanics of it voice-over is easier because there is no hair no makeup no wardrobe no fittings no line memorizing. You don't have to me woken up in Russia at 6 in the morning and go film a scene. It's just easier on the body the family life to do voice-overs.
Anybody who is running a marathon or doing a walkathon doing a fundraiser for their school their company by far it's guaranteed the easiest and most fun way to quickly set up a fundraising campaign and send it around to your friends and family.
