Honestly, at least in my own opinion...
Physicality almost always refers to being able to run the football on offense, and stopping the run on defense.
If you can't do those 2 things, you are not physical.
Unfortunately, we do not do either one of those things well. We are not built to beat the colts, titans or Patriots.
Beane has built this team to beat KC. Which, he successfully did in his defense.
The NFL evolves too quickly to keep up with drafting/signing the right bodies.