In the data results table, the element displaying numerical value has a class lk-vis-table that has a specific CSS attribute font-variant-numeric: tabular-nums; which makes numbers use monospaced characters:
In the actual visualisation, however, it is missing and the values are much harder to read:
Please add this styling to the actual visualisation not just results table.
It would be nice to also have the same padding. The data results is a table whereas the visualisation is a div that has rows places using css transformations but you could still use the same styles to make it look like data results