This was the auction at 3 of the 10 tables; at the other 7 tables (including mine) South bid 2♠ directly over 2♣. The direct 2♠ is explained as including 4+S and 14-17 total points. This delayed 2♠ explanation includes 4+S and 12-20 total points. Shouldn't those two explanations fit together better?
And, how does North figure he has game-forcing values opposite 12-20 total points? (He also raised directly to game opposite what he thought was 14-17 total points.)

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