There may be something to that assertion, Sergio. The only two-bath type I use, Diafine, works very well with more traditional type films like Tri-X and FP4+ (despite the revisions) and not so well with T-Max films.
I plan to try Diafine next with Efke R100 and APX 100.
Some folks swear by the results from two-bath and divided developers, others swear at 'em. The tonal characteristics can sometimes be odd, especially lower tone and highlight separations. Midtones tend to be strong, shadow detail pretty good considering the speed boost Diafine gives some films, and compressed highlights. But the light has to be just right to get the most from films developed in Diafine. When it works the results are terrific.