Where would you put Sumokoin in the ranking of all those anon coins out there? Like Zcoin and Zcash etc. Is it really superior to Monero or does the advancement of the anon tech also come with other pitfalls? Would it be possible for Monero to upgrade the code base with what you have and if yes, why don't they do it?
In privacy Sumokoin is at the same level as Monero and this is 100% provable so there are no major differences in the anon tech.
Sumokoin at the moment is as anonymous and private as Monero.
BUT
What differentiates it from Monero is that Monero propagates through hard forks and patches. Sumokoin had just one hard fork, at the beginning, in order to introduce a new diff algo to deter nicehashers and cpu farms with extremely high hashing power to take advantage of the lag of the difficulty adjustment of the original cryptonote diff algo and gain the majority of the blocks while leaving the network stalled in high difficulty when it reached the proper relative value. This is why it is most of the times the most profitable coin to mine at whattomine even though its price at the moment is ridiculously low.
No further hard forks are anticipated.
Sumokoin also has RingCT and 12 mixins from day one, from the first coin minted so there are no traceable transactions in its chain, Monero had to hard fork recently in order to introduce compulsory ringCT so all transactions before that are potentially traceable.
Sumokoin has arguably a better coin emission plan (check the ANN) which doesnt emit all coins at the first couple of years making it commercially more attractable since it will reach maximum block reward when wishfully will be adopted by markets and the need of circulating coins volume will be greater.
Devs will be merging subaddresses capability to core this month that will enhance its privacy ( Monero already did ) devs are at the last stages of testing at the moment.
Sumokoin has a more easy to use and presentable GUI wallet which adds to the easy to use but 100% mentality of the coin.
Devs have plans to differentiate further from Monero but keeping the privacy principle attached so all innovations applied will not affect the fungibility and the 100% anonymity of the coin.
Very interesting read and I think you guys really know what you are doing. I looks promising and I'll consider an investment in Sumokoin. Thanks for your explanation!
been following since day one 
