wrong, simply wrong.
1. all the other programs can do accounting. MYOB can, QBO can - Xero can't (beyond what fish'n chips shops need). Xero's point of differentiation are gimmicks.
2. Some features must be added and can (either by development or acquisition). Other issues like the fractions require you to go deep under the hood. They screwed it up at the beginning:
https://community.xero.com/business/discussion/51751/
3. QBO has multi-currency and Xero's claims that it does not is just another of many distortions. The US version doesn't have it because small American businesses don't need to deal with foreign currencies.