Could you elaborate on how you got those numbers? You lost me at $56 but I don't understand your percentages either so perhaps I'm missing something here.
My guess is that they're focusing on new plans, not allowing rollover from previous plans and not allowing employees to keep the plan after they leave the company. In this situation they're able to have mostly savers with low or very low balances, and they charge on average higher fees than Vanguard and others.
56 = cost to employer
Capital = how much the employer has in the 401k
0.13% = average fund fee
So if Capital = 200k
Percentage = [56/200k + 0.13%] = 0.028% + 0.13% = 0.16%
My guess is that they're focusing on new plans, not allowing rollover from previous plans and not allowing employees to keep the plan after they leave the company. In this situation they're able to have mostly savers with low or very low balances, and they charge on average higher fees than Vanguard and others.