IMO car makers these days have a lot in common and if you don't see it your blind (last comment not pin pointed at any particular member ).

You see the automotive industry goes in design phases if some particular shape/design sells well all the companies use it in new or updated models etc etc.

Also alot of the head designers swap from one marque to the next taking his/her style along with them.

So yes it is a copy in one way but with the rest of the vehicle it may create a new look (although you can't do too much with pickups )