SEN need to 2-0 FURIA
100T needs to 2-0 NRG
LOUD needs to 2-0 G2
and there is a chance from map and round diff
25 sounds like a lot but when you want one team to lose and the other to win it actually isn't that bad if you do the math. Lets say SEN play well and manage to 2-0 FURIA like 13-5, 13-6 that "25 round diff" suddenly becomes 10. If LOUD play as well as they did against SEN then they could prob close that gap. Ofc its still quite unlikely but more achievable than it sounds