strategy
Range advantage
Also: equity advantage, nut advantage
The situation where one player's range of possible hands has more equity — or more of the strongest hands — than the opponent's on a given board. It drives who should bet and how big.
Example. On 7-6-5 rainbow the big blind, who called with hands like 8-9 and 4-4, has a range advantage over the button raiser.
Range advantage is split into equity advantage (whose whole range is ahead on average) and nut advantage (who has more of the best hands). High, ace-heavy boards favour the pre-flop raiser; low connected boards favour the big-blind caller who has all the small pairs and suited connectors. The player with both advantages can bet often and large; the player with neither should check a lot.