Totally different production crew, and none of the hosts are anywhere close to as polarizing as Clarkson (or Hammond or May for that matter).
I'm a big fan of the UK series, and while the US version originally emulated the UK formula very closely in format, it has morphed into a "challenge" based show with the three hosts basically hooning around in various challenges.
I didn't like the US version at first, but it has grown on me. Once I stopped expecting to be as good as, and the same show as the UK version, it's quite enjoyable. I like Tanner, Rut, and Adam, too. They're very endearing in a benign sort of way.
My money is on them giving the car a very positive review.