No. If you’re interested in comparing expected loses it would be better to use the house edge. My section on the house edge shows the blackjack house edge to be 0.43% (Atlantic City rules) and that of Caribbean Stud Poker to be 5.22%. The expected loss for 1 hand of Caribbean Stud Poker at a $5 ante is $5 * 5.22% = 26.10 cents. The expected loss for 6.7 hands of blackjack at $15 per initial bet is 6.7 * $15 * 0.43% = 43.22 cents. So given these two options you will lose less in Caribbean Stud Poker. The ratio of the house edge of Caribbean Stud Poker to blackjack is about 12. So the expected loss of a $1 initial Caribbean Stud Poker bet is about the same as a $12 initial blackjack bet.