Absolutely, equivalent to WO1
Not strictly true. The RAF often claim that their WO are equal to WO1 and senior to WO2 but Queens Regs makes no comparison between WO1/WO2 in the Army and WO in the RAF. In other words a RAF WO is neither senior nor junior to WO1 or WO2 apart from the fact that the Army would be viewed as the senior service of the two.