I did read your post (yes I saw your edit). You said "Videogames journalism is not journalism" - to you, maybe. If others expect games journalists to have basic journalistic standards, then that doesn't make them wrong.
Also your point the MCV roundup helping retailers to decide inventory is completely irrelevant. They should absolutely list all reviews if that's their intention because just cherry picking positive reviews does not give retailers a fair picture of the critical reaction to the game. Not that that makes any difference - for the majority of games, reviews are far from the be all and end all in dictating their sales. Titles can score fantastic reviews across the board and still sell poorly for a variety of other reasons, despite being brilliant games. Likewise titles in series such as FIFA can sell millions of copies whether they're good, like they are now, or shit, like they used to be in the PS2 days.