The latest (and current) generation of Superia 100, 200, and 400 doesn't comprise a 4th color-sensitive layer any more. Superia 800 and 1600 keep the 4 layer technology until now.
The now discontinued original Agfa Vista films gave similar results with tungsten and fluorescent illumination as the Superias, so a fourth layer wasn't necessary. It appears to depend on the spectral sensitation.
The current Superia 100, 200, and 400 films are available also rebranded e. g. for drugstore chains (at least here in Europe), and sold at a very reasonable price.