All of this discussion leads me to a definition of a dwarf conifer. Ten different people will have ten different definitions. Normal growth being defined as how it would grow in its native range and soil without any special treatment. Any plant can exhibit an abnormal growth rate if it is heavily fertilized and watered in a milder climate. The Portland, Oregon area does not have its many nurseries by accident.
Plants grow faster there.
If a conifer is extremely dwarf, it can be referred to as miniature. If other people want to use different definitions, that is all well and good. But be certain to know those different definitions, especially as they apply to plants you may wish to buy.