Will this team beat Cynthia...i beat the elite 4 but gosh shes hard as hell(pokemon)?

my pearl team were in their 40's & 50's when they went against the E4 didn't make it past the 2nd e4 member so i decided 2 train them to lv 72 and i just barely made it past cynthia but i was ready for her last pkmn which is roserade i took it out with flamethrower from my pauly (palkia) and i'm gonna use my pearl team for the E4 in my diamond game whenever i get the chance 2 borrow my bestfriend's (michelle's) silver ds again so continue 2 train your pkmn up to lv 72 or higher. good luck :)