I have an Nexus 5. I looked at the specs and it looks like the Nexus 7 2013 isn't more powerful than the Nexus 5.
The Nexus 7 is plenty powerful. It's an awesome little tablet. I have 3 other tablets (iPad Mini retina, Dell Venue 8 Pro, Surface Pro) and the Nexus 7 gets the most use out of the bunch. I have the Moto X and Nexus 5 and if owning those two phones taught me anything it's that specs don't matter nearly as much as they used to- my Moto X is every bit as fast and smooth as the N5 and it's a dual core krait 300 vs. the quad krait 400 in the N5. The only time you can tell the N5 is faster is in a side by side, and even then it's negligible.
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