Is it more meritorious to attend a Majlis in person where you are not able to shed tears, or listening to it online and being able to shed tears and cry?
Bismihi ta'ala
Location should not affect the ability to weep and shed tears for Imam Husain (a.s.), as when you hear the musibah of Ahlul Bayt (a.s.), you should completely zone out from everything else and express your grief.
Of course, it is always best to attend Majalis in person, participating in the mourning ceremonies with other believers and increasing the number of devotees who commemorate the tragedy of Karbala.
And Allah knows best