I think it just depends. They do the video interview to try to increase the success rate of the f2f and waste less time/money/f2f slots with the initial screening. If they bring you in for an interview they want to hire you. The job is yours to lose. As for success rates I’ve never seen that published or really gleaned that info from any recruiters I’ve talked to. Just go in and be prepared, honest, confident, humble, and happy to be there (standard interview advice).