Soldato
Does the ferrari engine actually split the turbo to the extent that Mercedes does, putting the turbine to one side of the engine block and the compressor to the other side, or have they just moved the turbine and compressor away from each other a bit? I was under the impression that part of the masterstroke of the Mercedes engine was the fact that the hottest part of the turbo was in front of the engine block, meaning that the gearbox can be moved right next to the engine without there being any overheating problems (obviously there are many other benefits with this, but I don't need to list them here). If ferrari have simply moved the turbine and compressor apart a bit while keeping both parts behind the engine then, while they may technically have a split turbo, it wont be anywhere near as effective as the Mercedes one.
This article should hopefully explain it in a bit more detail: http://www.bbc.co.uk/sport/0/formula1/26946444