I think you are being too "realistic". A brother in soul with LL.
Perhaps I am being too simplistic but the fact that DM took this case on "CONTINGENCY" says it all. This type of firm would not take a case like this if they did not feel their chances of prevailing was far more than 50-50. That being so, I do not believe DM would be anywhere near EDig if they calculated their "profit" to be 40-50% of a ten million dollar settlement.
Putting the time, energy and resources into this for $5,000,00 as its share of a settlement and then have to pay taxes (maybe) on it would definitely NOT be a goal of DM.
If your thought process prevailed DM WOULD
NOT