They could, but a single win on that IBP tournament is not enough to convince me. They looked not that great, even with that 3:0 win. Navi nearly won out Mirage, and Nip nearly got Overpass. Avangar also tested them a bit.
But yes, Liquid would be the best bet if you look at the other teams. Vitality with ZywOo would crumble I think. And Renegades won Mirage out, but Astralis came back even stronger. and yea, who else is there? Navi will not win against then, no way.