Gaviglio struck out more guys, walked fewer, and induced a few more ground balls. I get that he's 5 years older than Borucki and doesn't throw as hard, so we can still dream on Borucki being becoming a rotation mainstay, but Gaviglio handled himself well last year. Until Borucki actually does take that next step (or Gaviglio loses another tick on his fastball) these aren't dissimilar arms as far as utility and ability.