Mario Party Δ said:
For its sale section, don't simply list the numbers. Is it relatively successful or not?
Wikipedia and other neutral POV encyclopedias do infact "simply list the numbers", as well as any other relevant information about a thing's given financial performance ("call of duty Modern warfare 2 broke entertainement launch records", "GRID 2 was the third best-selling game in the UK for the month it launched...", "an executive said Superman 64 was unprofitable... etc") and do not make qualitative statement about a game's success. This is because financial success is not simply determined by the raw number of copies sold, but also things like the game's budget, opportunity cost, etc. We do not know on what budget WarioWare twisted was made on, and for what we know, it might've not been that profitable becuase localizing it was expensive, the western release bombed... etc.
Like, I guess you could more data about where it placed on its launch week and how it compares to the sales of other Warioware games, but qualitative statements like "WarioWare Twisted was a commercial success" are not the way to go. It's better and safer (for our ass) to provide the facts and let the reader come to a conclusion with the data available to them.