so one judge says that you may use hypersonic speed and ranged combat expert and one says you can't. so which is it? and PLEASE explain why.

thanks

RCE is a power action.

HSS allows a close or ranged combat ATTACK.

No RCE. No EW. No Incap. Just a regular attack (with an object, if you have Super Strength).

When in doubt check the PAC and see what types of actions/attack are allowed by these movement powers (HSS, RS, Charge).