The phrase "are when compared to" is correct and usable in written English.
It can be used to draw a comparison between two or more subjects, highlighting differences or similarities.
Example: "The results of the experiment are when compared to previous studies, significantly more accurate."
Alternatives: "are in comparison to" or "are relative to".
Perhaps it's me, but what seems odd is how out of proportion the mentions are when compared to other papers.
Visitors to Moscow and St .Petersburg are often startled at how well-dressed Russian women are when compared to Americans.
How effective they are when compared to a Random replacement policy?
Additionally, we used the Mahalanobis distance to measure how similar the methods are when compared to the best possible detection output.
Thanks to this honest bookkeeping, Chile's and Argentina's national accounts appear much worse than they are when compared to the U.S. and European countries that paper over their enormous unfunded social security obligations.
Instead of sensationalizing individual injury cases, let's do the math on how dangerous these magnets really are when compared to other consumer products and activities.
The detail that struck me immediately (and stuck with me throughout) was just how much smoother and quicker Dark Souls 3 is when compared to its predecessors.
It also measures how unlikely the vector distribution is when compared to the reference vector [33].
The figure shows how much 'sharper' the reassigned spectrogram representation is, when compared to the original 'blurred' spectrogram.
The decline in the amount of (prefectural) rice production was, when compared to 2010, 20.7, 17.2, and 14.1 % in 2011, 2012, and 2013, respectively.
At least, that's when compared to their Russian counterparts, who are shown to be less disciplined and decidedly more savage.
