I'd rather fight a 2d pole 1v1 than a hoplite. A 2d guy will make some mistakes with blocking eventually, especially if you have a 4d weapon. Fights don't usually stay 1v1 forever too, if I have someone to join in I'd rather fight a 2d even more because you can combo 2 different attack directions at once. You can hold and release to stun the guy a bit too, which doesn't seem to work against shields. Once a shield is broken the guy can then have a 4d weapon which I find harder to fight than 2d, same with 1 or 2 handers.
In terms of hardest to fight for me i'd go 1 hander/shield, 2 hander, hoplite, 2d. Depends on the players though ofc. Can't just look at the class if its a guy like Chase with Awlpike