I agree with fatspur.
Don't forget that Alfa Romeo have always (well, at least since 1951) relied on sporty saloons with some coupes and ragtops on the side. They were never much of a sports car or executive car maker, historically speaking.
1900, Giulietta, Giulia, AlfaSud, Alfetta, Sei, Giulietta again, 33, 75, 164, 145/146, 155, 156, 147, 166, 159, MiTo and Giulietta. All family cars of various sizes, in saloon, hatchback or estate shape. Some with coupe models, some without. Alfa already has a segment in the Fiat family, and even if they tweak the traditional model range, I don't think they will put an Alfa badge on any real Porsche competitor.
The 4C is a thing of its own. You only need to bring up that British car maker and that other German car maker when you talk about the 4C if you have a hard-on for marketing and like to wear suits in your spare time. For Alfisti there is no comparison.