That's not indisputable video evidence. You can't see the ball touching the ground. It's obscured. You aren't allowed to make assumptions. The call on the field stands if there's no angle clearly showing what happened.
BTW, the picture you just posted came after the picture I already posted showing his hand under the ball after he hit the ground (because the Patriots' defender did not have both hands on James in the picture I posted). See:
The point is that "after" is an indefinite period of time. His initial contact with the ground was his knee hitting. After that, he torqued his body and lunged for the end-zone. His football move should have ended the process of the catch because he still was possessing the ball after initial contact with the ground and had the ability to lunge for the end-zone. It's very different than plays where the receiver has no break in the process.
Indisputable video evidence, by its definition, does not allow for an inference to be used. Two different replay angles being pieced together to form a conclusion is LITERAL. They can splice together two different angles to give them a better understanding of the entirety of the play. Problem here is that no angle shows the ball hitting the ground.
Am I saying that the NFL is incorrect in its interpretation of its own rule? Well, I don't think even the NFL understands its own rule:
View: http://www.nfl.com/videos/nfl-game-highlights/0ap2000000240906/Cruz-18-yard-TD-catch
View: https://www.youtube.com/watch?v=53t3xFNrGjg