Sentence Correction (SC) | Re: Some of the homes that were destroyed and structurally compromised in

I came across a similar question on Kaplan

Some historians estimate that in the Great Chicago Fire of 1871, twice as much acreage was destroyed AS HAD EARLIER BEEN ravaged in Napoleon's Moscow burnings of 1812 and the Great Fire of London of 1666 combined.


Will it make a difference if I say- '' AS WAS RAVAGED IN....''
Since year is mentioned why not use simple past instead of pastperfect?