Firstly, it just looks more...toy like. The paint app is different to the standard size and although it still looks crisp and nice...the character of the model feels different on the desk. Its really hard to describe but it sticks out to me.
Secondly, and the thing that annoys me...the deflector/nose on mine is totally loose and just flops about. When paying this kind of money I want decent quality and I'm happy to pay it, so long as we get solid build and no faults.
I luckily didn’t have a fault on my xl defiant. Although I’ve had major faults on 2 previous XL ships. However, I have to agree there is completely something toy like about the ship. I put it next to all the other XLs and it just doesn’t look quite right. Although, like you, I’m not sure I can put my finger on it. Maybe it’s looks a little cheap comparatively? Ahhh I’m not sure