I consider Raymond Carver one of the most overrated writers ever, albeit many of his short stories are actually quite good.
Carver had a great talent in writing about everyday's life, giving a literary status to monotonous American characters caught in monotonous situations. Hence I can't say that Carver is a bluff, but at the same time I think that his deep influence on many contemporary short novelists is a bit too much.
Of course he was a master in his own way and he has opened a new path, but most of his followers have exaggerated in chasing his traces footprint by footprint. I can't say I don't like Carver, but - as for Bukowski - I would like to talk about his short tales without considering him untouchable.