You could say that about any pitcher. Happ is coming off a great season and projects for a sub-4 FIP, ~2 WAR. Chavez has two consecutive seasons with xFIP under 3.9, also projects for ~2 WAR. Estrada and his perceived ability to beat DIPS is probably the biggest wildcard in the group.
Our offense is also elite, if they give up less than 5 runs most games there's still a big chance that we can win many ballgames.