[MKZFan]

so just a wider back compared to the front? is that what they mean?

Yes, basically they're trying to make a FWD vehicle look like it's RWD with the typical design cues of a RWD vehicle that makes it's obvious it's RWD.

 

[MKZFan]

it is, not sure if I would want to drive a car like that which is trying to pose as something it's not. Weird.

 

[MKZFan]

It's that and even likely wider rear fenders or just fenders that just aren't flat. Basically they will hint at the vehicle being RWD.

 

[MKZFan]

That is very true.
To me, this is not the way to go about bettering their vehicles. Many FWD cars look great and not once do people consider it needing "RWD looks"