What Tim doesn't tell you, is that the Nexus 7 is MUCH better at TV, Movies, Youtube because that's how they do their aspect ratios.
Why is that? Because it closely matches the 16:9 aspect ratio? If you were talking about the iPad 4 vs. Nexus 10, you would be more accurate, but unfortunately, Mini vs. Nexus 7 isn't so cut and dry. The larger screen on the 4:3 Mini actually gives it a larger viewing area when viewing 16:9 content compared to the Nexus 7's 16:10 screen.
Unfortunately, no one ever seems to post the flippin' screen dimensions anywhere as everyone is all about diagonal sizes. So, I did a little math, and got the following dimensions:
iPad Mini:
6.28
4.71
Nexus 7:
5.92
3.70
Fortunately, Apple provides the overall surface area in inches squared of a 7" tablet and their own tablet, which made this much easier. All you do is solve the following equation for n:
[aspect ratio: width]n *
[aspect ratio: height]n =
[surface area]
Then you multiply by the respective aspect ratio number again to get the actual screen size.
Now, what we're looking for is actual viewing size in inches. Both of them will use the entire height (i.e. 6.28 and 5.92); however, neither of them will use the entire width, because the Mini is 4:3 (will use 75%) and the N7 is 16:10 (will use 90%). Because of that, the iPad Mini actually uses 3.53" to display the video and the N7 uses 3.33".
So, the effective 16:9 content display size is...
iPad Mini = 6.28" x 3.53"
Nexus 7 = 5.92" x 3.32"
As long as you're willing to deal with the fact that you're wasting more screen real estate on the iPad Mini playing 16:9 content, you're still getting a bigger viewing area as an end result.