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It is impossible to form a correct opinion based on fragments of games.
Regarding the case with 2 versions of the game:
For example, both SoD heroes and WoL heroes might be open. I myself often check games that interest me in WoL during the opponent's turn. Which, by the way, some people told me about (something like HD-MOD triggering).
I believe that one or two can still be written off as chance/noobishness, but any more than that and unpleasant thoughts start to arise.