Given the Player's lack in offensive options in the
Toolgun and a wider variety of mostly offensive options in the
Context Menu, I think he won't much difficulty sorting through them either. The Player is probably way smarter than what his current intel rating suggests
(I mean he outright replaces Gordon if you play through the HL levels), though if they lose given their likely lack of combat experience then I'm fine with that.
I think i'm leaning towards a vote for not-Sans here (Ness). The Player still has options that would likely lend them a win, however it's unlikely they would use them until it's too late.