It's not really that good of a comparison, it's written by an Inspire owner who's never owned 3DR gear, so has never used the software, never dealt with 3DR's customer service, never dealt with DJI's customer service outside the US either. As both a DJI owner and 3DR, I know myself there's a HUGE gap between the support services.
I had pointed out a number of flaws in the comparison, but it's wasted breath when someone doesn't know a product, the policies of the company who make it and more than likely at the outset will have decided which product he wanted to come out on top.
A few points for example, the Solo has a whole multitude of sensors, it's almost 3 of each, this means it will cost more money as you're getting almost 3 flight controllers worth of sensors in one copter. The optical flow will include a LIDAR rather than an inferior sonar sensor. These are just a few things you would consider if trying to do an unbiased review.
That's why I did the video to explain what was actually inside (technically there's even more still):
Then there's the Arducopter software, which not only has many "cool" features but for someone like me, that's more interested in reliability, the features such as the GPS Glitch Protection and EKF help reassure me that it won't fly away and will take corrective action for a number of sensor failures, from the GPS to the compass, to the IMU.
If an IMU in a Phantom fails, it's crashing, simple as, if that happens in the Solo it will fail over to a secondary IMU so you can land successfully and without incident. These things make a difference, especially if you want to move towards commercial work.