So you want a +tive expectation on your overall play. You took advice on starting hands, and play groups 1-4 and saw that it didn't do what it was said it would.
If you blanket this advice to all positions at the table then yes you are going to find the answer you have shown.
Clearly we have to play these hands cause if we don't we'll be worse off. We also have to define where we have a -tve ER, otherwise you won't know where to start doing something about it.
Does it cost you to play these cards in any position other than the blinds?
No.
On average you'll make 0.58 bets per hand.
In the blinds will you make money if you play only these hands?
No
If you limit yourself to only playing these cards in the blinds then the loses are way greater than the gains. Whilst you make money round the rest of the table it gets gobbled up by the true cost, the blinds.
So clearly while there is value in the advice it is too general. We need to adapt a wider strategy, and I think the place it needs most adjustment is in the blinds. You'll want to play cards here as well as group 1-4, that have the ability to make large gains per hands to offset the loses and let the other positions and group 1-4 hands be your profit.
I think that is why I went on about the other 7 hands not being significant as regards your confusion, and the blinds being the sign of a good player.
As for some real figures as to what a "better" than average player might expect from group 1-4, well you're not getting mine
. I'll give you a general idea tho, its substantially more than you are suggesting might be reasonable.