The strongest use case is a retailer, distributor or hybrid B2B and B2C company already using one of the supported ERPs. The announcement names mid-market businesses with one or more physical locations and high transaction volumes. It also lists support for multiple stores, multiple registers, buy online, pick up in store and buy online, return in store.
For those businesses, the possible gain is operational rather than cosmetic. A price changed in the ERP should be reflected at the register. A sale should feed back into the same inventory and financial picture. A return should not leave one version of the transaction in the POS and another in the accounts system.
The browser-based design also changes the hardware question. POS 7.0 can run on Windows, Android and iOS devices. Its offline mode is designed to keep sales, card payments, gift cards and tax calculation running when the internet connection fails, then synchronise transactions when the connection returns.
That does not prove that every UAE payment terminal, acquiring arrangement or tax workflow will work without configuration. The sensible reading is that offline operation is a capability to test, not a substitute for local implementation checks.