The guys at Trade View don't really have a reference how they place the score either - what they've told me is that it's based on Trade View's risk management, position sizing, risk vs reward rules, etc.
So my guess is looking under the "Risk vs Reward" tab - the number of trades, risk:reward, and expectancy are probably the reasons why it's giving 44. I suspect the number of trades is the main contributing factor since it's almost 3 times as much as Portfolio 1.
Having said that, they don't seem to get too hung up on the score as they also trade strategies that have score below 10.