[drcapn]

To the calculator... if you assume his range is any pair and any broadway, it's a fold (see below). Which brings up a PokerStove question: does it adjust the probability for opponents holdings based on your holdings? (e.g. less probability for QQ or AA here since we hold AQ)

Board: Jd Th 4s
Dead:

equity win tie pots won pots tied
Hand 0: 34.299% 31.18% 03.12% 50933 5094.00 { AcQd }
Hand 1: 65.701% 62.58% 03.12% 102229 5094.00 { 22+, ATs+, KTs+, QTs+, JTs, ATo+, KTo+, QTo+, JTo }