Don't hoplites have damage maluses that lead to having less damage than LS users ? I don't know the exact numbers.
Anyway, it's more fair to compare the best hoplite weapons with the best 2D polearms which aren't the pike/LS. I'd say the awlpike is the best, but really all those that are shorter than 190 have decent damage and are relatively easy to use even without a massive STR stack. With a lot of PS or a lot of experience playing those weapons, you can instant stab with the longest 2D polearms which is very hard to fight against. Which is also why I don't think 2D polearms need a buff at all, unless the instant stabs get fixed.