It's true. If for some reason you're going to say that promotion to the PL is a greater achievement, then someone can come along and using that reason say, "Ah, actually promotion from League One to the Championship was a greater achievement because of whatever," and then someone else can come...
By that logic you could say that avoiding relegation from League Two was the greatest achievement, since we wouldn't have achieved promotion to the Prem if we'd gone down in 1997.
Which ranks higher in all time greatest achievements?
There are two ways of looking at the question: which is the greater achievement in the sense of bringing more prestige or glory to the club, or which is harder to achieve?
If by the question you mean which is the greater achievement in the...