head to head
Borderlands 2 asks more than Guild of Dungeoneering, and the gap is execution.

Optimization · Systems & Chaos
Loot-shooter RPG built on gear chasing.

Optimization · Systems & Chaos
Baiting a rule-driven hero with tiles while playing the odds of card draws.
Borderlands 2 leans Optimization (Systems & Chaos); Guild of Dungeoneering leans Optimization (Systems & Chaos).
Borderlands 2 leans clearly harder on execution.
Borderlands 2
Aim matters but generous hit feel
Guild of Dungeoneering
Laying tiles and playing cards - zero twitch
Borderlands 2 leans a little harder on reads, though the gap is small.
Borderlands 2
Enemies are scripted loot fodder
Guild of Dungeoneering
Hero AI follows fixed lure rules, never adapts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Borderlands 2
Procedurally generated weapon drops vary
Guild of Dungeoneering
Card draws and loot rolls swing every delve
Borderlands 2 leans a little harder on optimization, though the gap is small.
Borderlands 2
Skill trees and gear math heavily solved
Guild of Dungeoneering
Deck knowledge and dungeon-tile baiting are the solvable core
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.