Each one of these artists had awesome performances. They performed their singles in their own way and they all were good. Bruno Mars performance was amazing and because of that his sales for the song Treasure (off of his sophomore album Unorthodox Jukebox) went 220%; approximately 24,000 downloads. Jennifer Lopez gave a high octane performance of her single Live it Up feat Pitbull. Her sales went up 53%; giving her a total of 65,000 downloads. Ed Sheeran gave a mellow but passionate rendition of his song Lego House. His sales went 134%; giving him a total of 56,000 downloads. 

Anyway it seems like Award Shows have a significant impact on an artists career. Boosting their sales and popularity. I for one enjoy the award shows. It shows whose a studio artist and whose a singer. Honestly the dancing and stuff is awesome for visual. But if you can't relay your product in public like you relay in the studio then you should just be a recording artist. Studio performance only!