Not the same as double exposure...
...because the rules are different. Just one obvious example: In double exposure you lose ties, so BS for a hand like hard 20 vs. dealer's 20 is to HIT, and hope for an ace. If you just glimpsed the hole card in regular blackjack with the same two hands, you would of course STAND and be happy with the push. I recall that Million Dollar Blackjack has a good discussion of hole card basic strategy.
EE