It certainly is sensible to expect and see that architects have a style to their designs, just as many of us have styles that we prefer playing.
But the point about range is on mark when evaluating architects- those who can lay out top notch designs over drastically different terrain deserve praise, while architects that pump out carbon copies get the D.
Is it 'range' that seperates the big name archies form the regional ones? It seems that a lot of regional designers do the same boring, shallow bunkered, blah, blah, blah, 6800 yard course.