said by michieru:and the only one that matters of any of that is HDD size
No it's not.
1. There are more options based on the chart provided to fit more range of users who might use a tablet as the primary machine.
2. Weight and size goes to iPad by just a few points but numbers are numbers.
3. iPad has more memory and it's available if you so desire the space.
4. No rear facing camera on Nexus.
5. 4G option available.
6. One extra color for iPad.