-> A+ Once MMence is banned, MAltaria will be one of the best DDers in the tier as it has an amazing typing, reliable recovery, can cure its status and fire off pixilated boosted attacks. Its coverage is really good as it has everything it needs to beat its would be checks with either Fire Blast or Earthquake. It doesn't end up there; as its defensive typing allows her to check/counter both Zards, Keldeo, Lati@s, MGallade, Garchomp, Landorus-T, Dragonite, Rotom-W, Raikou, MManectric, MSableye, MSceptile... you get the point. This thing is able to fit in every playstyle from HO to Stall and makes for a good glue on your team. Definitely A+ in my eyes.
-> A+ This thing is a very big threat, with unresisted coverage in two moves, she is free to choose what to use in the final two moveslots. Apart from being amazing against offense with high powered stabs and high speed, she can support her team so easily, as she has many options to choose between Healing Wish to get a teammate healthy when she isnt needed, passes subs to teammates, etc. Want MLopunny to be a wallbreaker? She can use Power-up punch and proceed to 2hko your Skarmory/Hippowdon/whatever or even pass the boost to a teammate. Do you want priority? use Fake Out. Do you want a fast Heal Beller? MLopunny uses it pretty nicely as she forces a lot of switches. Heck, it even has Encore and can Toxic your obvious Slowbro switch. The combination of offensive presence, good speed, support and the momentum she brings to the table makes her worthy of A+.
Also, the fact that MVenusaur is becoming more and more uncommon makes these two even better.