you should consider that the only reason why u take more damage energy is due target skill not really due energy does more damage, in average even if they cast x2 skill energy they can only cast 1 per turn as 1 physical per turn also both does a lot less damage, than earth berserk, so in a full box earth berserk would be a lot more dangerous than energy spells, also taking into account that energy beam even in full box is only 4 from 8, while x8 falcon knight is x8 earth berserk, you must take all that into account before expressing your opinion and considering "bad"* due you aren't agreed.
now lets do maths, using LSH + Gnome armor + soulpiercer + ring of souls + falcon greaves + soulwalker: ESS give 2% physical over EP
energy protection = 24.6% (if im not wrong that's still 24, but i would say 25 to be sure) using EP 8% if not
Earth protection = 27.8% (lets say 28%) using ESS, 5% if not.
So, while EP would increase 17%~ energy damage resistance, would decrease 2% physical resistance (total 23.4% from EP vs total 25% from ESS), also ESS would increase 22.8% (23%~) of earth damage, so IN BOTH ELEMENTAL AND PHYSICAL RESISTANCE ESS PROVIDES MORE RESISTANCE, if we also take into account that in a full box Earth elemental is almost 100 damage extra above energy and would land 100% then in an equal resistance ESS would still be more worthy.
now the part that i hate the most is you saying that shawl would be useful only if you dont have earth imbue, i already explained that indeed if you are running energy resistance is more worthy, but if you are going to full box the worst thing that u want to get is resistance to a type of damage that is lesser, can be avoidable even in a full box and is casted almost eqaully than a greater damage (earth) that lands 100% in a box.