DK-50 is a fairly 'soft working' or low contrast developer. It was originally intended for developing copying film and the like. It's been a long time since I used it, and can't say how it compares to Tmax. My recollection is that results from it were nothing out of the ordinary - average grain, average sharpness, low base fog.(posted 8587 days ago)
It's not an acutance developer by any means, if that's what you were looking for.