All in all, global tablet shipments were up for Q2, according to new numbers released by analyst firm Strategy Analytics. Factoring in white-box units, the market saw 51.7 million tablets shipped in that time period -- that's up 43-percent compared to the same time last year. A lot of that good news can be chalked up to Android's success. The OS saw a healthy bump from 18.5- to 34.6 million units shipped, a number that has Google's mobile operating system holding 67-percent of the market. The news is a little less cheery on Apple's side of the OS war