Does Qiime feature table heatmap compare mean values or raw values of bacteria?

I am using QIIME2-2023.2 and generated a heatmap using the qiime feature-table heatmap tool. My question is whether a heatmap generated through this method compare the raw values for each particular taxonomic class such as:

Number of Gammaproteobacteria in Sample A > Number of Gammaproteobacteria in Sample B

OR Does it compare relative frequency in each sample i.e.

Relative Frequency of Gammaproteobacteria in Sample A > Relative Frequency in Sample B

Thank you!

Hello!

This one is correct:

since this one is inappropriate:

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