在正式文体中，as…as…句式中的后一个as后面是可用倒装句的。比如《牛津英语用法指南》有如下说明：
在较文的文体中，有时候在as, than和加强语气的so之后用倒装。如：
She was very religious, as were most of her friends. 她宗教信仰很深。她的绝大多数朋友也是这样。
City dwellers have a higher death rate than do country people. 城市居民死亡率比农村居民高。
So ridiculous did she look that everybody burst out laughing. 她的模样如此滑稽，大家都捧腹大笑。
虽然上面关于as的例句与你的问题中的句子不一样，但我们从第二句 City dwellers have a higher death rate than do country people. 可以得到一些启发，此句的通常说法应该是：City dwellers have a higher death rate than country people (do).
比较：
City dwellers have a higher death rate than do country people.（较文的文体）
City dwellers have a higher death rate than country people (do).（现在的说法）
Small as it is, the park near our neighbourhood is as much a natural oxygen bar as are all other parks in this city.（较文的文体）
Small as it is, the park near our neighbourhood is as much a natural oxygen bar as all other parks in this city (are).（现在的说法）