Realtime GI looks different from Baked GI with the same Albedo Boost Value

Hi,

A part of my scene looks like this, when I use Realtime GI:



Inderect Intensity is set to 5 and Albedo Boost to 1.
However, when I switch to Mixed Lighting and Baked Inderect (other settings remain unchanged), I get this:



Which looks much more realistic, though Inderect Intensity is still 5 and Albedo Boost is 1. I thought, that it's weird that the same settings yield such different results when I switch from Realtime GI to Baked GI. But then I increased Albedo Boost to 3 and baked GI again. Which resulted in this:



This one looks much closer to the results of Realtime GI.
So, it seems, Realtime GI (Inderect Intensity: 5, Albedo Boost: 1) = Baked GI (Inderect Intensity: 5, Albedo Boost: 3). The problem is that it's stated, that only the default value (which is 1) is physically correct:



So, which GI (Realtime or Baked) shows physically correct result and why do they look different with the same Albedo Boost?