Well having a matchplay would be like having a loss rebate. So if you have a $10 matchplay with your $10 bet when you lose you are essentially getting $10 back, and when you win you collect $20. Matchplays won't help you win more hands but they will maximize the amount of money won when you win!
Matchplays help add to your positive variance!
A first card is an ace coupon will change your standard deviation if you could use that coupon on every hand it would be almost impossible to lose more than 10 bets if you played the hands properly.