Diesel / Hybrid showdown on a short trip

It's a common belief that hybrids are disadvantaged on short trips because of the S1 phase that's necessary to bring the engine up to operating temperature.

Here is a comparison of the same short trip as driven by an Auris Hybrid 1.8 2013 and a Renault Megane III 1.8D SW

Here is the Auris, scoring at 16.3 km/l

and here is the Megane at 8.54 km/l

The hybrid builds up slower, but as soon as you cross 1 km distance, it gains the lead, and still climbing. We know that full potential comes up after several kilometers and is in the range of 30 km/l