there is always a very important risk factor in all of these Masternodes which you can not even measure and you will never see in any of the masternode guides and that is the price volatility of the  coins. OP's table has Economic Grade which seems like it is taking it into consideration but not that much.
we all know that altcoins are pump and dumps and their dumps are usually pretty serious. investing in these coins and wishing for profit may prove pretty difficult when their dumps come and you start losing money because you can no longer cover the costs.