Mjolnir enhancing Thor's striking power is a given, but there is clearly a significant overlap, much higher than their should be between what Mjolnir is capable of and what Thor is. Example, Thor palming Mjolnir being swung by the Destroyer:
You would assume that implies a significant strength disparity, but it doesn't. The Destroyer is stronger, and swinging a hammer.
I can post other things recently, such as Black enchanted Uru melting (Designed to withstand the death of the Universe), while Thor was channelling the mother storm:
https://i.postimg.cc/v85Jhkkt/RCO011.jpg
https://i.postimg.cc/rFcvPgLX/RCO011-1583413149.jpg
https://i.postimg.cc/SNrwF8yX/RCO012-1583413149.jpg
https://i.postimg.cc/Z55XTRRw/RCO013-1583413149.jpg
Thor is more durable than Uru? Comics are stupid. Assume Mjolnir enhances Thor's striking power.
P.S. Mjolnir grants you the power of Thor know. That's what made it so powerful and deadly. The MS retcon doesn't make much sense, but still seems to hold true post-retcon. I.e. if it was stripped of the enchantment to give you the power of Thor, it should just be a hunk of Uru. How does this make sense? Not sure.