@Germlat,
I frankly don't care for Lady Gaga. Perhaps, it's because I don't like her particular style, as opposed to her voice (which IMHO is OK). She employs too much vibrato. Her voice hasn't much assertion...a bit thin. For example, back in time, Eartha Kitt used to use tons of vibrato in her singing, but had an amazing delivery and was the most appealing lady.
What I applaud is Tony's embracing of the current generation of singers. He is brilliant and should forever be in the pantheon of the best singers in the last 60 years, regardless of genre or style or style changes.