Now, these are two different cars although both running the stock turbocharger. Additionally, it is a self-serving comparison. Without a full modification list for each Golf R it is difficult to know if it is just the tune accounting for the difference. Apparently the APR car had an upgraded fuel pump. That said, the APR air/fuel ratio does look smoother and is clearly more aggressive.
The proper way to do this comparison is to have each tuner dyno tune the same car. Regardless, APR is a juggernaut and no doubt one of the best tuners available. This does make Revo Technik look very weak though despite being a flawed comparison and they have yet to respond. Graphs like this sway minds on forums and those swayed minds take their dollars to what they think is the better option.