ILX 2.0L Premium: $30,095
TSX Base: $30,905
ILX has these following features that the TSX lacks,
-Keyless Entry & Ignition
-Multi View Rear View Camera
-Better Fuel Economy
-SMS Text Function
If you want a 6MT, the diff in price is larger
ILX 2.4L Premium: $30,095
TSX SE: $31,905
and the ILX 2.4L still has the same advantages a 2.0L has over a base TSX.
I'm also going to go ahead and guess the ILX may actually have a better ride because of the reactive dampers which the TSX does not have.
In other words, there is zero overlap if you are lookcing at these specific models. And a smaller overlap then from other competitors if you are looking at all trim levels.