The positive reaction in FaZe Holdings' stock price can be attributed to the market's optimistic view of the new sponsorship deal with Rollbit. Sponsorships can provide significant revenue and marketing benefits, which are likely to be viewed favorably by investors. The direct mention of the company and the nature of the news suggest a high relevance and importance for the stock. The confidence level is high due to the clear cause-and-effect relationship between the announcement and the stock price movement.