Same line of Brolly's power is repeated in Tenkai3 in Brolly's bio page. If it wasn't true, they wouldn've have repeated the information. So, again, crappy fanid only made more crappy by mentioning SSJ4 which is NonCanon to the main series.
American bio based on an American dub, makes sense to me. Still doesn't make it true though, the video's facts still stand.
SSJ4 was an example to show how ridiculous the whole thing about Broly's power increasing indefinitely, I don't think you read that part properly.