Actually, my theory is that the Sox have almost always had plus hitting, but the rings came only after we acquired a second solid SP.
2004: Had Pedro- traded for Schilling
2007: Had Schilling- traded for Beckett
2013: Had Lester- signed Lackey
2018: Had Price- traded for Sale
Right now, maybe Bello can be an ace- maybe, but we are far from a #2, unless we think Paxton can keep going like this.
Also, most of those 4 ring years had more than just 2 solid starting pitchers.