Why are table game returns generally much higher than slots?

This is very old software meant for the Vista crowd. It's like software designers quit a decade ago.
Demo version turns 5's into 6's unless I have $95 in real money to stop busting on 16's, and it expires in 2 weeks.
I played 300 hands in 2 hours and won $7.50 in play money after being down, well, it forgot what my low bankroll was but it was in the bottom 10% for a time.
It says I should be up $1.60/hand (on $32 average bets, $30 base bets?), or up $480 on 300 hands. I was down $300+ and won it back.
My errors were 8 of them costing $24.22, seems I make some repeat errors, or misclick a hit instead of a stand, I wish the buttons were bigger and not so close together.
I never saw the count indicator budge, maybe it doesn't in the game I'm playing.
I've got the Pit Boss & Surveillance HEAT graphs up and they're around 20% in the green, but the longer I play the more they inch up. I suppose if I'm there 6 hours it might get up to 40% in the yellow, idk.
So total bet was just shy of $9600 with an average bet of $32, a high bet of $60, a BR average of $968, and a BR high of $1285, and a BR start of $1000.
Total: I was up $7.50 at 1 hour, and again at 2 hours.
So I'm supposed to win 1 base bet unit every 20 hands? I'm lucky if I can lose 15 hands then win 15 hands back in an hour.

From my book, "Contemporary Casino Table Game Design," page 22, my first principle of table game design:

"My thesis is that variance is the product customers are purchasing by playing a casino game. The only difference between two casino games is the amount of variance they offer and the wrapper that variance comes in. "

One consequence is that people will pay more (higher house edge) for more variance.

Quote: teliot

From my book, "Contemporary Casino Table Game Design," page 22, my first principle of table game design:

"My thesis is that variance is the product customers are purchasing by playing a casino game. The only difference between two casino games is the amount of variance they offer and the wrapper that variance comes in. "

One consequence is that people will pay more (higher house edge) for more variance.

so whats the variance of a slot game ($1 denom) that will either pay $0 or $10k and have a return of 85%?

Figures. Treasure Island Casino in Minnesota has a note in the demo game I downloaded: "Heat for green action from out-of-towners."
Table limits of $5-$195 and $10-$500.
I'm so sick of looking at these Minnesota casino notes.

Quote: 100xOdds

so whats the variance of a slot game ($1 denom) that will either pay $0 or $10k and have a return of 85%?

SD is 92.2. Variance 8,499

Hmm, won from $1,000 to $5,000 in 135 hands of blackjack and beat the EV meter so bad it said "Probability of this result or better is 0.029%."

Started another session and went from $1,000 to $10K in 130 hands with the same strategy. It's nice when the software is handing me wins for once instead of endless losses designed to make me quit forever. However, the Pit Boss & Surveillance HEAT meters are in the yellow at 60%. At 65% they send their suits to look at me disgustingly? Average bet was $230 this session, was $150 last session, I started out with a $90 bet.
Total bets in the 2nd session: $28,880, up $10,205, top bet was $600, up about 35 hands.