Well the Xpeira Z2 comes in at 146.8 x 73.3 x 8.2mm and the Note 3 is 151.2 x 79.2 x 8.3 mm. So half a centimeter shorter and less wide than the Note 3 and the thickness is virually identical.
Quite honestly, when I see all these complaints about bezels (not just specifically the Z2) I have to wonder how many people have seen the devices in person.Take the Tablet Z for example. I've seen so many complaints about its bezel (and likewise the Z2 Tablet), but when you've got it in your hands, you realize the bezel is just perfect for your thumb to hold on to it firmly and not oversized. Same goes for my Z Ultra. It's the absolute perfect size for the top and bottom bezels to be able to hold it.
Plus, quite honestly I think the bezels on these devices only look large when comparing it against another device. In real life? They're not big at all. So they really aren't that massive, and they serve a functional purpose. I know the day will likely come when Sony decides to go with smaller bezels and I'll still get that phone, but I'll probably be a bit sad when I'm trying to hold my phone one handed and I keep accidently tapping the screen.