Sarushka, this is very easy and at the same time difficult question. If will start to discuss about it, we will never finish it. All that period of Russian/Soviet History was full of troubles, and even now still it's not clear to understand the separation of the powers between All-Russian Central Executive Committee and Council of the People's Commissars of the RSFSR for example. First (headed by Sverdlov, then by Kalinin) was mainly legislative, while second (headed by Lenin until his death) was playing the role of a government of the RSFSR and was mainly executive.
All-Russian Central Executive Committee was the highest legislative (mainly), managing and at the same time control (State court) organ in the Russian Soviet Federative Socialist Republic (1917-1922) and later in the USSR.
By the way, the head of this Committee from November, 1917 till March, 1919 (until his death) was Sverdlov, also a very big Party player and organiser of Romanov's trip to Moscow, closer friend to our Commissar Yakovlev. That's why, by the way, Yakovlev, as an Executive Commissar from All-Russian Central Executive Committee, while was carrying Romanovs, had enormous power and all must be comply with all his orders, including Ural Regional Soviet.
Now we are going to Regional Councils. This is more difficult to understand in a first time. Ural Regional Council was the highest exclusively executive department in the area, without any judicial functions. That's why, for example Ural Regional Council hadn't any legitimate rights to destroy the Romanovs. All the execution was strongly agreed with All-Russia Executive Committee (Sverdlov) and Council of the People's Commissars of the RSFSR (Lenin).
So, finally, answers to your questions:
- All-Russian Central Executive Committee was highest and mainly legislative and judicial department throughout Russia, while Ural Council was regional executive department.
- They can't be ranked, because they had played rather different functions. But of course Ural Regional Council must strongly execute all orders from All-Russian Central Executive Committee.
- The Romanov's trip from Tobolsk to Yekaterinburg was organised by Sverdlov (All-Russian Central Executive Committee), but their execution was organised by Golovochekin (Ural Regional Council) and agreed with Moscow (Lenin and Council of People's Commissars of the RSFSR) and Sverdlov (All-Russian Central Executive Committee)