Several days ago we received a Samsung Galaxy S 4 Google Play edition to play with and shared our first impressions. This week we take a closer look at what’s different between this handset and its TouchWiz-equipped cousins by scrutinizing the benchmarks, battery life and camera performance. Samsung pleasantly surprised us at Google I/O when it announced a Galaxy S 4 running stock Android. HTC then joined the party with its own unskinned superphone, the One. This Galaxy S 4, which landed in the Play store on June 26th for $649 contract-free, is identical to T-Mobile’s 16GB model and shares the same specs. So, what does stock Android bring to this flagship? How does it compare to the TouchWiz versions? Is anything left behind? Finally, is this Google Play edition worth the extra cash? Hit the break to find out.