I disagree.
If you play a very basic game of blackjack, let's say one that someone reasonably intelligent could pick up in a few hours, EV = +0.01, SD = 2.5, your SCORE is 16.
If you play a very basic game of limit Hold'Em SSHE-style, EV = +0.03 (1 BB/hr), SD = 2.5 (15 BB/hr). Accounting...