Yes.
Arnold, as quoted above.
Sheesh, try and keep up. Arnold is quite clear - Zero jizya is less than Muslim taxes and military service, non-poor Muslims pay more tax than non-poor non-Muslims and the minimum rate a poor non-Muslim pays is equivalent to 12 chickens a year, (or around 36g of Silver) when the minimum poverty level was savings of around 600g silver or the value 200 chickens (based on the reports that one dirham would buy a chicken and that during the Islamic period there was no inflation - inflation only really started when interest became integral to the economic system, before that prices were pretty stable)
I knew you may have problems interpreting what Arnold wrote - that is why I highlighted some portions in red and have painstakingly taken you through what Arnold is saying.
So, we have seen that non-Muslims who are the poorest, richest, sick etc - all pay less taxes than Muslims. In the exceptional case where a border-line poor person converts, his 'penalty' in financial terms is at most 7 chickens but he will have to serve in the military - ergo, even in this case the 'tax burden' on a Muslim is higher (because serving in the military must be worth more than 7 dirhams!)
QED
Cheers,
Shafique