Being “earth sized” and in the “habitable zone” are really just starting points for the possibility to have life or be able to sustain life.
Does it have an enormous moon such as earth does to cause tides which create tidal pools which could incubate early forms of life?
Does it have tectonic plates which could create undersea volcanic activity which could incubate early forms of life?
Does it have a liquid iron core which generates strong magnetic waves which could protect life from radiation?
Does it have several enormous gas giants next door to it protecting it from interstellar debris zooming through it’s solar system and thus prolonging the time between catastrophic cosmic impacts?
There is much more than size and location to being “earth like”.
Like any prime Real Estate, it’s value depends on LOCATION! LOCATION! LOCATION! ...........................