We have a bee in our bonnet like no other about one sided games like no other sport. It will happen at any level at any time. If say Wigan beat Widnes by 80 do we say lets have 13 in SL, Leeds beat Bulls by 76 Lets make it 12 to stop these one sided games. If games are one sided at ANY level in ANY competition then so be it. As a regular contributor on here and if you take the time to look at my post I post unbiasedly about the Bulls. I am a RL fan and concerned about the game and constant - if you excuse the terminology - farting around with the game can do more harm than good. Toulouse not so long back, a French semi pro club got to the Semis if memory serves me correct beating SL opposition along the way. Why should the Cup be placed in the hands of SL clubs? What about the extra revenue that the visit of Hull, Leeds or Wigan can generate to say Gateshead, Oldham or Skolars.
O and if you want me to refer to my club we got stuffed 71-10 in a CC Cup semi-final before the game went fully pro.
I think you're correct to say that one sided games can occur at any level, RL is just that kind of game where a team gets a roll on and becomes unstoppable, though the example of the Wigan v Bulls semi, even though it was a good time ago, isn't really THAT different to the conditions we see today.
I would mention that you say the game "went fully pro", though, of course, it never did; only the top division went fully pro. So the semi you quoted was actually very much like the Rochdale Bulls game last weekend, with one fully pro team and one made up of part-timers.
Incidentally, the only other team making a pretence of being full-time back then was Leeds - who had over 80 put past them in a play-off by Wigan and were beaten by a bigger margin than we were in the semi, which I guess proves the point.