The Ducati GT1000 had that same large gap between the rear fender and tire. I guess it happens when you try to use a modern frame in a bike that's supposed to look vintage. I think the three different bikes look remarkably similar too, but I still like them. Motot Guzzi did a better job making their standard and café look different, even though they're pretty much the same bike.
Regardless, I like the look of the new bikes. Are they perfect replicas of the old ones? No, it's a modern interpretation, but I still like it.
Scott