Do Colorblind People Have Stronger Sensitivity in Their Other Remaining Cones?
Kudos for Delta-S in Reddit for enlighten me. Original post is here.

The answer is no, color blind people don't have stronger sensitivity in their other remaining cones. This goes back to the Photopic Sensitivity Graph below.

As you can see, human vision are most sensitive to green. All responses of green cone are within the photopic sensitivity as well as most response of the red cones. And despite few responses of red cones are outside the Photopic sensitivity, the peak sensitivity of red cones is very close to the peak of Photopic sensitivity (560nm and 555nm). 




Peak Photopic Sensitivity: 555nm
S cones peak  : 420nm
M cones peak  : 530nm
L cones peak  : 560nm


So, in case of Deuteranopic, depending on which wavelength is loss (defected) from their eye, if it closer to the red response then they will likely to experience luminance loss as well. However, if the green cone that is defected is far from the red response, the red cones still have possibility to maintain the luminance they can achieve. 

Unfortunately in the paper, it's not mentioned which sensitivity wavelength was defected from the unilateral participant. It is only mentioned "result indicate that she was deuteranopic".