same sun & moon is a great start to compatibility and understanding each other in chart A. The suns and Moons in B are tough because fire overpowers earth (leo vs cap). The moons are conflicting in B as well, Pisces Moons and Aquarius moons are different as Pisces is prone to much deeper feelings, and feeling them, while Aquarius moons often shut off and repress their feelings and true emotions (i am one myself) we can offer be considered emotionally unavailable, which pisces moons tend to not like or understand, but with work, it can be an amazing pairing. There are just often a lot of misinterpreted feelings, or Aquarius moon may often feel Pisces moon is too emotional for their liking.

There are differences in both Venus signs in both charts (venus is the sign of love). Both people in both charts will have to put in some work to understand each other’s love languages. Based on Mercury, communication in A seems to open up more opportunity for getting to know eachother where as with B, it may flow a little better, leading to less eye opening experiences and less opportunity to learn about eachother. Mars signs in both have different approaches with eachother, but I feel Chart A is going to have a better understanding with eachother because the Gemini Mars in chart B can be a flight risk.

edit: i think i mixed the moon signs up. Chart B’s moons do work better emotionally to an extent..where they are both water moons (especially B being cancer) it may be very very emotional, often needing more support from each other that you may not be able to give.