Decided to do a battle between two of the starter servants. I think it could be interesting since through re-rolls, you could be certain to get the one you want and just be stuck without the other. Also it could be an interesting battle for brand new players I suppose.
For me this one may be a bit more about where you are in the game or who your other servants you like to use are. Early on, Marie May serve a more useful roll. She is hard to kill and can slot in well for a stall team. While most of her skills are centered around keeping herself alive, her male only charm has its uses, especially at higher skill levels. While not very significant until her NP interlude or you have her up to higher NP ranks, her team heal effect from her NP is a decent bonus.
Both are pretty weak attack wise and don’t offer any attack steroids to themselves or the team. Martha really relies on having the team Debuff cleanse. That’s by far her most important skill. If you use Jeanne, Tamacat or servants like Frank, Martha is a huge help. While her NP is weak, it does at least reduce the entire enemy line ups defense to go along with her single target defense down.
In the long run I think Martha is the better servant for her ability to wipe debuffs from your team. While not always useful and it’s not gonna earn her a spot in a lot of battles, it still makes her more unique in my opinion.