I am giving you that the Bear front* is a 3-3. To describe it as a 2-4 causes more confusion than clarity. But that doesn't transform Perry, body-wise, into a DT.
We have forgotten a small point about your call for the 3-3. You wanted more size to defense the middle of the field. You wanted to take Jones or Hawk off the field for a DB and leave three lineman.
So Capers, in this formation, run for 15 snaps versus 1 team, gave you half of what you want. A formation of 3-3. But he did it by subtracting a lineman for the DB and lining up an OLB at DT. That is a plus of 1 inch and 10 pounds over Jones.
* actual Bear front needs another backer on the LOS, but three lineman over the G-C-G is one of the defining characteristics.