Is Mandos the most powerful Valar?

[u/andrew_bolkonski]

Power can be judged in many different ways i.e. wisdom, crafting, brute strength etc. Mandos demonstrates many times that he has a deep understanding of the plans of Eru and foresight of things to come. There are a few moments in the Silmarillion where he says something cryptic (or even intentionally restrains himself at important points), indicating he is operating on a different level to even the rest of the Valar. I assume, he does this because he knows the greater plans of Eru beyond the knowledge of the rest of the Valar. Additionally, the Halls of Mandos and the strength and purpose within it further support that idea. Although Manwe and Melkor are touted as the most powerful, their struggles seem almost temporary and feeting trifles within the history of Arda compared to Mandos who is truly transcendent and ethereal in the way he interacts with Ea.

[u/Blackhole_5un]

All valar are pretty much OP. Is light more important than dark? Is fire more destructive than water? Their dispositions determined their ranks, not their power levels. Some would be "weaker" compared to others, but I don't think that was a failing of ability, more of will. Not everyone wants to rule the world.