@Killroy. For Desert Rats, the CLs are usually +1 Level but lower-Q than me (to start with - they quickly get better), or same Level, slightly higher Quality. I have done better against the +1 Level opponents than I do against the same Level, as the +1 Level managers are mostly absent (in the 1st match/Leg - they soon appear when they realise they've got a problem, but usually it's too late for them...) That 11-0 in the first CL match against a same Level slightly lower-Q opponent was very much a freak result, as I set the team up and then just watched the massacre happen...
Home Guard get same-Level CLs but the opponents are all over the place, Quality-wise. Two of the three they've got this season are 8-10% higher-Quality, the other is about 10% lower. They're aiming for the Super League slot...
The Cups are very much a lottery. Whatever the Level opponent, the matches are easier to predict and deal with. In the CL, there's always the chance of a stupid tanker in the Group stage that skews the results...