It's not the same. Why would had our devs bother to spend thousands hours of coding if so... the way you say this is a bit misleading IMHO.
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I never said it was the same. I said the anonymity uses the same underlying approach as cryptonote so the resulting anonymity is the same (or worse, if minting/destroy is used too much, but that is up to the users I suppose). I acknowledged some minor differences, but I don't believe they are particularly significant in the area of anonymity.
As for why thousands of hours were spent on it, you would have to ask them. Presumably they thought that reimplementing it all was a good idea for whatever collection of reasons. I guess the market will decide.
Question, can cryptonote coins slot in updated technology to there code without starting from scratch? because i know SDC can without starting from scratch so yeah maybe it's based on the same technique as cryptonote but it can be improved and it's faster and slimmer and the wallet is the best looking and functioning wallet in the crypto world with chat and many extras coming soon so right now we win

we will have mobile wallets in the near future with all this tech would like to see any of the cryptonote coins pull that off.
Not from a miners' point of view ^^
XMR is a good anonymous
POW coin, SDC is a good anonymous
POS coin
Let's be friend with XMR guys

sounds like a good idea, in a perfect world competing coins and community's would out innovate instead of picking at straws to protect there investments and if that happened crypto would be far more advanced then it is now, but this is not a perfect world, if any coins want to be better the SDC then they better get to work.
If i say that it's because XMR has a real solution, and just by looking at their threads you can see a lot of people with a good knowledge, and when they came here it's to discuss tech.
Not like Drk, where people judge coins on their volume and marketcap ... and do basic trolling like that :
There was so much misinformation I just gave up. There is only so much time on this planet.
Seeing people say the exact same thing with each new scamcoin gets tiring. But the sheep need fleecing, so I expect we'll be seeing Shadowmoney, Blackcash, Hiddenasset etc ad infinitum. And all of their supporters will tell us how we just see their blatant shitcoin as a threat to Darkcoin.