Earlier you implied that Liverpool (who won the competition) were an also ran team. Rangers knocked out Porto (a team who won the competition previously and went on to win a domestic double that season I believe) and Celtic have knocked out some decent teams en route to the second stage. Whilst it's not particularly difficult for one of the teams thart perenially qualify for the competition from the top European leagues to get to the knockout stage, it takes a decent team from the lower echelon of leagues in Europe to do so consistently (which Scottish teams seem to be getting better at).
All of this is going off topic a bit though. All I'm really trying to say is that whilst the Scottish league is quite poor IMO, the achievement of Celtic and Rangers getting past the group stages of Europe shouldn't be knocked. They've always gone out to teams of vastly superior quality to them (and to most of the teams in the EPL). Besides, if they weren't getting through the group stages you'd probably be saying that you'd only be impressed if they were getting out of them.
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