Look at the link and I don't quite understand, Auto Express has the 159 at position 29, on the top 100 list the Alfa does not apear, position 29 is occupied by Suburu.
If you take the 85.95% score there are several cars whilst perceived as being 'better' by the sheep*, Audi A4, Merc C class, Passat and Jag are all behind the Alfa, so using that as a benchmark it has fared well.
I also notice in the test categories there is nothing about looks, interesting that one, no contest perhaps?
* This is the first time I have used the term sheep in a post on here, what I mean by sheep is the people who go out buy a German car (doesnt matter which, all dull and grey or black) just to blend in on the M25,4,6 whatever. Sheep are dull, boring, all look the same and follow each other, much like the buyers of ordinary cars.