Is it possible to 1000 elo without losing a single battle

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The FIDE rating is more realistic than the Chess.com rating , because the Sonneborn-Berger system or the Swiss system is a more realistic rating than the rating that results from a game of a lower rating with a lower rating that does not enter the competition of a higher rating , for example, the first who is in the competition with a lower rating could beat someone with a higher rating, which would in that way reduce their rating more when they lose to a lower rating, until the lower rating would increase more with a higher rating would win , while when players of approximately the same rating play then the rating increase or decrease a little , although the first one of them can be stronger than several of them with a higher rating . So often players with a higher rating leave the game when they see that they have to play with a player with a lower rating, because if by chance they lose, they lose a lot of points, so the rating Chess. coma is not real , It so often happens that a rating of 900 comes among the rights in competition with a rating of 2000 or more