Karma is a good 'background' building that knows its place in the landscape of the city and defers to its non-residential neighbours in the area for architectural interest. aA is capable of doing great buildings, and sometimes I feel that it's a shame that they are mostly as quiet as they are. On the other hand, this is what aA buildings do so well and so respectfully, and they reduce the clutter of the city. There is a grace in being someone who is dignified and doesn't possess a strong ego or continually shout for attention.
YC is a building that insists on being one of those buildings that buildings like Karma defer to. Unfortunately, it doesn't have what it takes and simply makes an embarrassment of itself. If it knew better, it would be a fabric building but instead it screams attention to its clumsy podium design and its expanses of spandrel panels and other crappy finishes. Graziani+Corazza have demonstrated time and time again that they have a poor grasp on scale, proportion, massing, context, and sensitivity to materials. They insist on creating buildings that stand out or at least are certainly not quiet, and they visually compete with far more successful buildings, creating unwanted visual clutter.
TL;DR In the majority of cases, condo projects do not have the budget for good architecture. A self-aware condo project realizes this and does its best to keep a low profile and defer to its surroundings or to cultural, institutional, and office projects that have higher budgets and better design or materials. At the very least, a self-aware condo will defer to the higher-budget or better executed condo projects in its direct vicinity, as a gesture for the city around it. The YC Condos does not have this self-awareness.