Memory usage displayed in the tab bar is radically different than the usage reported in Task Manager

I noticed that a tab I didn’t really need open displayed current memory usage of 468 MB in Task Manager, so I decided to close it.

However, when I clicked on the tab (i.e., in the tab bar), Brave displayed memory usage of only 236 MB.

What might explain this rather large discrepancy?

Thanks.

Mac OS 10.15.7 (Catalina)
Brave Beta Version 1.66.90 Chromium: 124.0.6367.82 (Official Build) beta (x86_64)

Ten days ago I reported a memory usage discrepancy between the tab bar display of memory usage and what the Mac’s Task Manager reported.

I can now add that I’ve been finding that suspended tabs are displaying very large memory usage numbers, many times the usage of active tabs.

This is the opposite of what would be expected.

Moreover, if I reload the suspended tab, the memory usage comes inline with the usage numbers normally displayed in most tabs.

Would appreciate some feedback on what is possibly going on here.

Clearly, it make no sense that suspended tabs would be using far more memory than active ones.

Thanks.