Room matters

Hi team, I'd like to propose an intriguing question to the community.
What's the difference between Proac D28 and D38? Ovator S-600 and S-400? Neat MF5 and MF7? Avalon Ascendant and Indra? Gamut L5 and L7? Pioneer S1-EX and S3-EX?
The answer to all of the above questions is "none"!
It depends on the room size. Assuming to have a well balanced and top of the art electronic system, if someone wants to improve from a loudspeaker point of view there is no way in doing it unless with a bigger room, hence a bigger loudspeaker. (changing brand because of personal taste and budget is not to be cosidered).
Am I too much provocative?

Thanks for sharing your ideas.