I did some quick tests between the MC-E 2.1A pill and the MC-E 2.4A pill. It sounds like the 2.4A pill may no longer be offered, but I managed to get one while they were. So I wanted to see just how much difference there was. I put them in my DBS V1, which has a AR lens installed.
The 2.1A pill was drawing 1.14A from 2xAWR123's, fresh off the charger. LUX at 1 meter was right around 10,000LUX.
The 2.4A pill was drawing 1.4A from 2XAWR123's, also fresh off the charger. LUX at 1 meter was right around 12,000LUX.